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"tags": [ { "id": 1, "created_at": "2025-04-02T14:11:26.52753391Z", "updated_at": "2025-04-02T14:11:26.52753391Z", "deleted_at": null, "text": "wikipedia", "bookmarks": null }, { "id": 23, "created_at": "2025-05-08T20:22:54.655430057Z", "updated_at": "2025-05-08T20:22:54.655430057Z", "deleted_at": null, "text": "mastodon", "bookmarks": null } ], "snapshots": [ { "id": 18, "created_at": "2025-05-08T20:22:54.68529015Z", "updated_at": "2025-05-08T20:22:55.192431097Z", "deleted_at": null, "title": "", "key": "2d0eceb40925e7d1b157e000483e3cb9a42172aa3aa95cb732065f47e229eb14", "text": "Search|||English|||Donate|||Create account|||Log in|||Contents hide|||Beginning|||Instances|||Accounts|||Tools|||Organizations|||Mastodon|||54 languages|||Tools|||Appearance hide|||Text|||Small|||Standard|||Large|||Width|||Standard|||Wide|||This external system is not subject to the WMF Privacy Policy.|||Mastodon is a microblogging application that's part of the Fediverse. It is free software and uses open standards to create a social media ecosystem that supports users rather than exploiting them as a product. Its servers are decentralized and run by volunteers or corporations, with moderation and user registration being decided by the server admin. Learn more on the Mastodon site.|||Instancesedit|||social.wikimedia.de, operated by Wikimedia Deutschland, only WMDE staff and board members are allowed accounts (more details).|||social.wikimedia.es, operated by Wikimedia España.|||wikimedia.social (announcement), operated by the Wikimedia Foundation, only WMF staff are allowed accounts.|||Wikis World, a Mastodon server for wiki enthusiasts, operated by volunteers|||wiki.style, a wiki-themed Mastodon server, operated by volunteers|||Accountsedit|||Microblogging handles lists Mastodon handles for some Wikimedia affiliates, organizations and projects. Some accounts are largely managed on-wiki, including:|||@Wikipedia@wikis.world|||@MediaWiki@wikis.world|||Furthermore, Wikidata has a property for Mastodon address that can be added to items on the platform. There are some regularly updated listeria lists of accounts such as d:Wikidata:List of free software accounts on Mastodon as well as a list of all items with Mastodon accounts (so far not populated due to a listeria bug but the WDQS query can be used).|||Toolsedit|||The fedi-share tool can be used to create \"share this page\" buttons/links for Mastodon users.|||Organizationsedit|||To get an inventory of Wikimedia Organizations using Mastodon, visit the page: FLOSS-Exchange.|||Category:|||Mastodon|||This page was last edited on 21 March 2025, at 13:29.|||Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. See Terms of Use for details.", "bookmark_id": 18, "bookmark": { "id": 0, "created_at": "0001-01-01T00:00:00Z", "updated_at": "0001-01-01T00:00:00Z", "deleted_at": null, "url": "", "title": "", "notes": "", "domain": "", "favicon": "", "tags": null, "snapshots": null, "collection": null, "public": false, "unread": false, "user_id": 0 }, "size": 135957, "resources": null } ], "collection": null, "public": true, "unread": false, "user_id": 1 }, { "id": 15, "created_at": "2025-05-08T14:40:41.607954783Z", "updated_at": "2025-05-08T14:40:41.607954783Z", "deleted_at": null, "url": "https://en.wikipedia.org/wiki/Fediverse", "title": "Fediverse - Wikipedia", "notes": "collection of social networking services that can communicate with each other (formally known as federation) using a common protocol. Users of different websites can send and receive status updates, multimedia files and other data across the network. 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Widely used and recognised.1|||Proposed symbol for the Fediverse from 2024, an asterism (⁂).23|||The Fediverse (commonly shortened to fedi)456 is a collection of social networking services that can communicate with each other (formally known as federation) using a common protocol. Users of different websites can send and receive status updates, multimedia files and other data across the network. The term Fediverse is a portmanteau of federation and universe.7|||The majority of Fediverse platforms are based on free and open-source software, and create connections between servers using the ActivityPub protocol. Some software still supports older federation protocols as well, such as OStatus, the Diaspora protocol and Zot. Diaspora* is the only actively developed software project classified under the original definition of Fediverse that does not support ActivityPub.89|||Designedit|||While a traditional social networking service will host all its content on servers managed by the owner of the website, the decentralized structure of the Fediverse allows any individual or organization to host a social platform using their own servers (referred to as an \"instance\").|||Every instance is independent, and can set its own rules and expectations. Even so, much like how users of one email service such as Gmail can still send emails to users of another service such as Outlook, users may still view content and interact with users on any other instance in the Fediverse. A user on one Mastodon instance, for example, may still view and interact with posts made by a user on a different Mastodon instance.10|||Instances hosted by different social networking services may communicate with one another as well. A user on the microblogging platform Misskey, for example, may view and interact with posts made by users on Mastodon. Some Fediverse networks even allow users to interact with different social networking formats from the same platform. For example, a user on a social news instance running Lemmy can interact with another post from an mbin instance, a similar service, as well as microblog statuses from Mastodon.1112|||Content moderation and user safetyedit|||Decentralized social networking platforms introduce new challenges and difficulties for user trust and safety.1314 By nature of the Fediverse, operators of an instance are solely responsible for moderation of its content. As there is no form of centralized governance or moderation across the Fediverse, it is impossible for an instance to be \"removed\" from the Fediverse; it can only be defederated per an instance operator's choice, which makes that instance's content inaccessible from the operator's instance.15 Individual instances are responsible for defining their own content policies, which may then be enforced by its staff. Moderation of a Fediverse instance differs significantly from that of traditional social media platforms, as moderators are responsible not only for content posted by users of that instance (\"local users\"), but also for content posted by users of other instances (\"remote users\").14|||With toxic or abusive content being common in the Fediverse,14 as well as available moderation tools and the legal or financial impetus to moderate content lacking in comparison to those of centralized social media platforms,16 the Fediverse exhibits shortcomings in child safety.15 A 2023 study by the Stanford Internet Observatory's Cyber Policy Center found that, out of approximately 325,000 Fediverse posts analyzed over a two-day period, 112 were detected as instances of known child sexual abuse material (CSAM); 554 were detected as containing sexually explicit media alongside keywords associated with child sexual exploitation; 713 contained media alongside the top twenty CSAM-related hashtags on the Fediverse; and 1,217 contained text relating to distribution of CSAM or child grooming. The study additionally noted that, during a test run of its analysis pipeline, detection of its first instance of known CSAM occurred within approximately five minutes of runtime. All detected instances of CSAM were reported to the National Center for Missing and Exploited Children (NCMEC) for triage.15|||A 2024 paper observed that operators of Fediverse instances lack the ability to moderate content to the same standards as conventional social media, on both a logistical level and often also a technical level; however, they enjoy the same legal immunity under the United States' Section 230, \"with none of the incentives to [moderate] anyway.\" The paper provides, as an example, instances whose purpose is specifically not moderating content, including \"the second-largest Mastodon instance\", which contains sexually explicit material of children.16|||Various solutions for development of content moderation and child safety on the Fediverse have been proposed. The Stanford Internet Observatory proposes development of distributable blocklists similar to BlueSky's functionality; mechanisms for pluggable hash matching and content classification (the same technology used by PhotoDNA); moderator tools such as grayscaling and blurring for certain report categories, as well as basic user fingerprinting; support and administrative interfaces for PhotoDNA and NCMEC CyberTipLine APIs; and a system of federated attestation of media analysis.15 Legal reform has also been proposed, most notably around Section 230 of the Communications Decency Act, as well as proposed legal requirements for instance operators to engage in good-faith moderation of instance connections.16|||Historyedit|||Historical protocolsedit|||Excerpt of common protocols and platforms in the fediverse (2024)|||The concept and the functionality of the Fediverse has existed before the ActivityPub protocol and the term itself. One of the first projects that included support for a decentralized social networking service was Laconica, a microblogging platform which implemented the OpenMicroBlogging protocol for communicating between different installations of the software. The software was later renamed to StatusNet in 2009,17 before being merged into the GNU social project in 2013 along with Free Social, with the two latter servers being a fork of StatusNet.1819|||Over time, the limitations of the OpenMicroBlogging protocol became more apparent, being designed as a one-way text messaging system.20 To replace the aging protocol, OStatus was devised as an open standard for microblogging, combining various other technologies like Salmon, Atom, WebSub and ActivityStreams into a single protocol used for communicating between instances. StatusNet first implemented the OStatus protocol on March 3, 2010, with version 0.9.0, and OStatus quickly became the most popular federated protocol in usage.|||Around the same time as OStatus was gaining popularity, the diaspora* social network was formed, using its own federated protocol. To illustrate the differences between the two protocols, the terms of the Fediverse and the federation began to enter common usage, mainly after 2017. The term \"the Fediverse\" was used to describe the network formed by software using the OStatus protocol, such as GNU Social, Mastodon, and Friendica, in contrast to the competing diaspora* protocol under \"the federation\".21|||ActivityPubedit|||Main article: ActivityPub|||The various platforms of the Fediverse, as well as other federated networks, visualized as a tree|||In December 2012, the flagship StatusNet instance at the time, identi.ca, transitioned away to a new software named pump.io, with a new federation protocol to replace OStatus. The new protocol was designed to be useful for general activity streams and not just status updates, and replaced many of OStatus' external dependencies with JSON-LD and a REST API for its messaging and inbox systems, as well as making more use of ActivityStreams. While not as utilized as its OStatus predecessor, it would end up becoming influential in the development of the ActivityPub standard.|||In January 2018, the W3C presented the ActivityPub protocol as a recommended standard.22 The standard aimed to improve the interoperability between different software packages running on a wide network of servers and to succeed both the OStatus protocol and Pump.io.23 By 2019, almost all software that was using OStatus had added support for ActivityPub. While Mastodon began to remove OStatus support, other projects maintained it in their code, such as Friendica (which also maintained diaspora* support along with ActivityPub),2425 and the term Fediverse has since come to mainly refer to the ActivityPub protocol and its supporting server software.[citation needed]|||Adoptionedit|||Users have been slow to embrace the Fediverse due to poor user experience and excessive complexity.2627|||Following the acquisition of Twitter by Elon Musk in November 2022, certain major social networks, including Threads,2829 Tumblr and Flipboard, expressed interest in supporting the ActivityPub protocol, as a large number of users began to migrate to Mastodon, a server that supported the Fediverse and was also the most popular alternative to Twitter at the time. Flickr also expressed support in supporting ActivityPub. As of November 2022, no information had been released by the company after the initial tweets by the CEO, with support for ActivityPub suspected to be on hold or cancelled.3031|||In 2024, the local government of the Stary Sącz municipality in Poland launched their own PeerTube instance32 in order to de facto abolish its presence on YouTube. According to the government, they stopped using YouTube for official communications \"in order to adhere to the appropriate regulations\".33 In the same year, VIVERSE, HTC Vive's metaverse platform, implemented support for ActivityPub in their chat feature, allowing users to send direct messages to other fediverse users.34|||Content management systemsedit|||WordPress has an officially supported plugin that integrates WordPress blogs into the Fediverse, allowing for comments to be exchanged between the comment section of a blog post and a Fediverse instance's reply function. The plugin was acquired by Automattic in March 2023,35 and became available for all WordPress.com users in October of that same year.3637|||Ghost, a blogging platform and content management system, announced in April 2024 that they would be implementing Fediverse support via ActivityPub.383940 The feature had been highly requested on its forums.41 In July 2024, Ghost started federating its development newsletter for the feature.42|||Microbloggingedit|||Automattic CEO Matt Mullenweg tweeted on November 22, 2022, that Tumblr was adding support for ActivityPub interoperability, in response to a user's complaints about Mastodon's complexity.43 However, no further information was revealed for over a year, and was expected to be cancelled after a leaked reorganization that moved most of Tumblr's staff to other Automattic projects. However, following a question from a TechCrunch reporter during a questionnaire about the leaked memo, he revealed that the interoperability feature was not cancelled and that there was a small team working on studying the potential of implementing the protocol.44 The plan was once again affirmed by Automattic in January 2025, with the ActivityPub plugin for WordPress most likely being the main method used for interoperability with the fediverse.45|||The release of Threads by Meta in July 2023 had included in its press release that it planned to support interoperability with the ActivityPub protocol.4647 In December 2023, select Meta employees began to federate with ActivityPub.48 A roadmap was revealed in January 2024 that detailed the integration of ActivityPub in Threads.49|||A faction of fediverse server admins, some of whom have listed their names under a pledge named \"Fedipact\", have expressed resistance to open federation with Threads over concerns that Meta would adopt an “embrace, extend, and extinguish\" policy towards the network, or that Threads' moderation would fail to prevent the spread of abusive content targeted towards marginalized communities.505152|||In March 2024, Threads implemented a beta version of Fediverse support, allowing Threads users to view the number of Fediverse users that liked their post, and allowing Fediverse users to view posts from Threads on their own instances.535455 On April 2, the official Threads account for President Joe Biden enabled federation on its profile, making Biden the first President of the United States to have a presence on the Fediverse.56 The ability to view replies from the Fediverse within Threads was added in August.57|||News aggregatorsedit|||This section needs expansion with: Flipboard integration and Lemmy's growth during the Reddit API controversy. You can help by adding to it. (August 2024)|||In December 2023, Flipboard announced that it started federating selected profiles and magazines with the Fediverse. It had previously run its own Mastodon instance, flipboard.social, as a test of the Fediverse.58|||Alternativesedit|||While the Fediverse has traditionally been the network most commonly referred to and used as an example regarding the subject of decentralized social networks, alternatives to it and the accompanying ActivityPub have been developed and deployed. A major protocol in competition with the Fediverse is the AT Protocol, which powers the Bluesky social network and has formed its own separate network dubbed by developers as the Atmosphere,59 while smaller competitors such as Nostr and Farcaster have become popular within the cryptocurrency community.60 These protocols have used ActivityPub in comparisons to their own architecture, as these newer protocols use a different federation model based on publishing content to relays for distribution rather than ActivityPub's server-centric model.6162 Despite their differences, software exists that permit the bridging of user content between these protocols, including \"double-bridges\" that span multiple protocols for the purpose of distributing the same content.6364|||Softwareedit|||Many Fediverse platforms have applications to use them on smartphones.|||Further information: ActivityPub § Software using ActivityPub|||ActivityPub is the most widely used protocol in the Fediverse and a W3C standard. Some popular Fediverse software includes:6566|||Content management system|||Drupal (via third-party plugin)67|||WordPress (via official plugin)68|||Image sharing/video sharing|||Pixelfed, an Instagram alternative|||PeerTube, a video streaming service similar to YouTube|||Macroblogging|||Friendica, an alternative to Facebook written in PHP|||Microblogging|||Mastodon, a microblogging social network written in Ruby|||Misskey, a popular Japanese social network written in TypeScript|||Pleroma, a lightweight microblogging server written in Elixir|||Social news|||Lemmy, a Reddit alternative written in Rust|||mbin, written in PHP|||See alsoedit|||Free and open-source software portal|||Internet portal|||AT Protocol – Decentralized social networking protocol|||Comparison of software and protocols for distributed social networking|||Distributed social network – Collection of services that communicate through a common protocol|||IndieWeb – Movement to self-host and control web content|||RSS – Family of web feed formats|||XMPP – Communications protocol for message-oriented middleware|||Referencesedit|||^ \"A Brief History of the Fediverse Symbol\". 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Retrieved July 25, 2023.|||^ https://medium.com/@denschub/activitypub-final-thoughts-one-year-later-194fe591e900|||^ Woloshyn, Roxannna (July 19, 2023). \"What is the fediverse and why does Threads want to join?\". CBC. Archived from the original on July 24, 2023. Retrieved July 24, 2023.|||^ \"Home | kbin.pub – Fediverse of content\". /kbin. Archived from the original on July 25, 2023. Retrieved July 24, 2023.|||^ \"Mbin - a fork of kbin - community-focused\". fedidb.org/software/mbin. Archived from the original on February 28, 2024. Retrieved February 28, 2024.|||^ Thiel, David; DiResta, Renee (July 24, 2023). \"Addressing Child Exploitation on Federated Social Media\". cyber.fsi.stanford.edu. Retrieved February 6, 2025.|||^ a b c Agarwal, Vibhor; Raman, Aravindh; Sastry, Nishanth; Abdelmoniem, Ahmed M.; Tyson, Gareth; Castro, Ignacio (May 28, 2024). \"Decentralised Moderation for Interoperable Social Networks: A Conversation-Based Approach for Pleroma and the Fediverse\". 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Retrieved April 3, 2024.|||^ Mehta, Ivan (July 5, 2023). \"Adam Mosseri says Meta's Threads app won't have ActivityPub support at launch\". TechCrunch. Retrieved April 3, 2024.|||^ Davis, Wes (December 13, 2023). \"Threads is officially starting to test ActivityPub integration\". The Verge. Retrieved April 3, 2024.|||^ \"How Threads will integrate with the Fediverse – plasticbag.org\". January 12, 2024. Retrieved April 3, 2024.|||^ Vallance, Chris; Gerken, Tom (July 10, 2023). \"Meta plans feed for Threads after users complain\". BBC News. BBC. Archived from the original on December 14, 2023. Retrieved March 22, 2024.|||^ Wickens, Katie (July 7, 2023). \"Threads threatens to muscle in on Mastodon's Fediverse and admins are up in arms about it\". PC Gamer. Archived from the original on October 2, 2023. Retrieved March 22, 2024.|||^ Barber, Gregory (July 19, 2023). \"Fear, loathing, and excitement as Threads adopts open standard used by Mastodon\". Ars Technics. Archived from the original on March 22, 2024. Retrieved March 22, 2024.|||^ Mark, Zuckerberg (March 21, 2024). \"Threads\". www.threads.net. Retrieved March 21, 2024.|||^ Roth, Emma (March 21, 2024). \"Threads' fediverse beta opens to share your posts on Mastodon, too\". The Verge. Retrieved March 22, 2024.|||^ Forristal, Lauren (March 21, 2024). \"Threads opens beta to let users connect their accounts to the Fediverse\". TechCrunch. Retrieved April 3, 2024.|||^ Davis, Wes (April 2, 2024). \"President Biden is now posting into the fediverse\". The Verge. Retrieved April 3, 2024.|||^ \"Threads is making fediverse replies more visible in its app\". Engadget. August 28, 2024. Retrieved September 12, 2024.|||^ McCue, Mike (December 19, 2023). \"Flipboard Begins to Federate\". Medium. Retrieved April 2, 2024.|||^ \"AT Protocol\". AT Protocol. Retrieved September 12, 2024.|||^ Torpey, Kyle. \"Here's why Bitcoiners are flocking to Nostr\". Fortune Crypto. Retrieved February 11, 2025.|||^ \"nostr - Notes and Other Stuff Transmitted by Relays\". fiatjaf.com. Retrieved February 11, 2025.|||^ \"FAQ\". AT Protocol. Retrieved February 11, 2025.|||^ Perez, Sarah (May 21, 2024). \"The 'vote Trump' spam that hit Bluesky in May came from decentralized rival Nostr\". TechCrunch. Retrieved September 12, 2024.|||^ Perez, Sarah (June 5, 2024). \"Bluesky and Mastodon users can now talk to each other with Bridgy Fed\". TechCrunch. Retrieved September 12, 2024.|||^ \"FediDB\".|||^ Pierce, David (December 19, 2023). \"2023 in social media: the case for the fediverse\". The Verge. Retrieved January 11, 2024.|||^ \"ActivityPub\". Drupal.org. February 23, 2019. Archived from the original on March 6, 2022. Retrieved March 6, 2022.|||^ Pfefferle, Matthias. \"ActivityPub\". WordPress.org. Archived from the original on July 2, 2022. Retrieved November 28, 2022.|||Further readingedit|||2022. Toxicity in the Decentralized Web and the Potential for Model Sharing|||2021. Exploring Content Moderation in the Decentralised Web: The Pleroma Case|||2019. The disinformation landscape and the lockdown of social platforms|||2019. Challenges in the Decentralised Web: The Mastodon Case|||2018. Recommending Users: Whom to Follow on Federated Social Networks|||2018. Multi-task dialog act and sentiment recognition on Mastodon|||2015. FCJ-190 Building a Better Twitter: A Study of the Twitter Alternatives GNU social, Quitter, rstat.us, and Twister|||2015. The Case for Alternative Social Media|||Wikimedia Commons has media related to Fediverse.|||hide|||v|||t|||e|||Fediverse and decentralized social networks|||ActivityPub network|||Drupal (via plugins)|||Friendica|||GNU social|||Lemmy|||Mastodon|||Micro.blog|||Misskey|||Mobilizon|||Nextcloud Social|||PeerTube|||Pixelfed|||Pleroma|||WordPress (via plugins)|||diaspora* network|||diaspora*|||Drupal (via plugins)|||Friendica|||WordPress (via plugins)|||Other networks|||AT Protocol|||Bluesky|||Matrix|||Nostr|||OpenMicroBlogging|||OStatus|||pump.io|||Twister|||Categories:|||Fediverse|||Microblogging|||Free and open-source software|||Social networks|||2008 introductions|||This page was last edited on 29 April 2025, at 16:00 (UTC).|||Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization.", "bookmark_id": 15, "bookmark": { "id": 0, "created_at": "0001-01-01T00:00:00Z", "updated_at": "0001-01-01T00:00:00Z", "deleted_at": null, "url": "", "title": "", "notes": "", "domain": "", "favicon": "", "tags": null, "snapshots": null, "collection": null, "public": false, "unread": false, "user_id": 0 }, "size": 323360, "resources": null } ], "collection": null, "public": true, "unread": false, "user_id": 1 }, { "id": 12, "created_at": "2025-05-08T13:51:08.330503215Z", "updated_at": "2025-05-08T13:51:08.330503215Z", "deleted_at": null, "url": "https://en.wikipedia.org/wiki/Creative_Commons_license", "title": "Creative Commons license - Wikipedia", "notes": "A Creative Commons (CC) license is one of several public copyright licenses that enable the free distribution of an otherwise copyrighted \"work\"", "domain": "en.wikipedia.org", "favicon": 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hide|||Text|||Small|||Standard|||Large|||Width|||Standard|||Wide|||Color (beta)|||Automatic|||Light|||Dark|||From Wikipedia, the free encyclopedia|||This article is about the Creative Commons licenses. For the organization that produced them, see Creative Commons.|||Creative Commons logo|||9:56CCA video explaining how Creative Commons licenses can be used in conjunction with commercial licensing arrangements|||A Creative Commons (CC) license is one of several public copyright licenses that enable the free distribution of an otherwise copyrighted \"work\".a A CC license is used when an author wants to give other people the right to share, use, and build upon a work that the author has created. CC provides an author flexibility (for example, they might choose to allow only non-commercial uses of a given work) and protects the people who use or redistribute an author's work from concerns of copyright infringement as long as they abide by the conditions that are specified in the license by which the author distributes the work.12345|||There are several types of Creative Commons licenses. Each license differs by several combinations that condition the terms of distribution. They were initially released on December 16, 2002, by Creative Commons, a U.S. non-profit corporation founded in 2001. There have also been five versions of the suite of licenses, numbered 1.0 through 4.0.6 Released in November 2013, the 4.0 license suite is the most current. While the Creative Commons license was originally grounded in the American legal system, there are now several Creative Commons jurisdiction ports which accommodate international laws.78|||In October 2014, the Open Knowledge Foundation approved the Creative Commons CC BY, CC BY-SA and CC0 licenses as conformant with the \"Open Definition\" for content and data.91011|||Historyedit|||Aaron Swartz and Lawrence Lessig at the 2002 event for the first release of the licenses|||Lawrence Lessig and Eric Eldred designed the Creative Commons License (CCL) in 2001 because they saw a need for a license between the existing modes of copyright and public domain status. Version 1.0 of the licenses was officially released on 16 December 2002.12|||Originsedit|||The CCL allows inventors to keep the rights to their innovations while also allowing for some external use of the invention.13 The CCL emerged as a reaction to the decision in Eldred v. Ashcroft, in which the United States Supreme Court ruled constitutional provisions of the Copyright Term Extension Act that extended the copyright term of works to be the last living author's lifespan plus an additional 70 years.13|||License portingedit|||The original non-localized Creative Commons licenses were written with the U.S. legal system in mind; therefore, the wording may be incompatible with local legislation in other jurisdictions, rendering the licenses unenforceable there. To address this issue, Creative Commons asked its affiliates to translate the various licenses to reflect local laws in a process called \"porting\".14 As of July 2011, Creative Commons licenses have been ported to over 50 jurisdictions worldwide.15|||International useedit|||Chinese useedit|||Working with Creative Commons, the Chinese government adapted the Creative Commons License to the Chinese context, replacing the individual monetary compensation of U.S. copyright law with incentives to Chinese innovators to innovate as a social contribution.16|||Applicable worksedit|||3:08CCWanna Work Together? animation by Creative Commons|||The second version of the Mayer and Bettle promotional animation explaining Creative Commons with Jamendo as an example|||Work licensed under a Creative Commons license is governed by applicable copyright law.17 This allows Creative Commons licenses to be applied to all work falling under copyright, including: books, plays, movies, music, articles, photographs, blogs, and websites.|||Softwareedit|||While software is also governed by copyright law and CC licenses are applicable, the CC recommends against using it in software specifically due to backward-compatibility limitations with existing commonly used software licenses.1819 Instead, developers may resort to use more software-friendly free and open-source software (FOSS) software licenses. Outside the FOSS licensing use case for software there are several usage examples to utilize CC licenses to specify a \"Freeware\" license model; examples are The White Chamber, Mari0 or Assault Cube.20 Despite the status of CC0 as the most free copyright license, the Free Software Foundation does not recommend releasing software into the public domain using the CC0 due to patent concerns.21|||However, application of a Creative Commons license may not modify the rights allowed by fair use or fair dealing or exert restrictions which violate copyright exceptions.22 Furthermore, Creative Commons licenses are non-exclusive and non-revocable.23 Any work or copies of the work obtained under a Creative Commons license may continue to be used under that license.24|||When works are protected by more than one Creative Commons license, the user may choose any of them.25|||Preconditionsedit|||The author, or the licensor in case the author did a contractual transfer of rights, needs to have the exclusive rights on the work. If the work has already been published under a public license, it can be uploaded by any third party, once more on another platform, by using a compatible license, and making reference and attribution to the original license (e.g. by referring to the URL of the original license).26|||Consequencesedit|||The license is non-exclusive, royalty-free, and unrestricted in terms of territory and duration, so it is irrevocable, unless a new license is granted by the author after the work has been significantly modified. Any use of the work that is not covered by other copyright rules triggers the public license. Upon activation of the license, the licensee must adhere to all conditions of the license, otherwise the license agreement is illegitimate, and the licensee would commit a copyright infringement. The author, or the licensor as a proxy, has the legal rights to act upon any copyright infringement. The licensee has a limited period to correct any non-compliance.26|||Types of licenses edit|||Creative commons license spectrum between public domain (top) and all rights reserved (bottom). Left side indicates the use-cases allowed, right side the license components. The dark green area indicates Free Cultural Works compatible licenses, the two green areas compatibility with the Remix culture.|||CC license usage in 2014 (top and middle), \"Free cultural works\" compatible license usage 2010 to 2014 (bottom)|||Four rightsedit|||The CC licenses all grant \"baseline rights\", such as the right to distribute the copyrighted work worldwide for non-commercial purposes and without modification.27 In addition, different versions of license prescribe different rights, as shown in this table:28|||Icon|||Right|||Description|||Attribution (BY)|||Licensees may copy, distribute, display, perform and make derivative works and remixes based on it only if they give the author or licensor the credits (attribution) in the manner specified by these. Since version 2.0, all Creative Commons licenses require attribution to the creator and include the BY element. The letters BY are not an abbreviation, unlike the other rights.|||Share-alike (SA)|||Licensees may distribute derivative works only under a license identical to (\"not more restrictive than\") the license that governs the original work. (See also Copyleft.) Without share-alike, derivative works might be sublicensed with compatible but more restrictive license clauses, e.g. CC BY to CC BY-NC.|||Non-commercial (NC)|||Licensees may copy, distribute, display, perform the work and make derivative works and remixes based on it only for non-commercial purposes.|||No derivative works (ND)|||Licensees may copy, distribute, display and perform only verbatim copies of the work, not derivative works and remixes based on it. Since version 4.0, derivative works are allowed but must not be shared.|||The last two clauses are not free content licenses, according to definitions such as DFSG or the Free Software Foundation's standards, and cannot be used in contexts that require these freedoms, such as Wikipedia. For software, Creative Commons includes three free licenses created by other institutions: the BSD License, the GNU LGPL, and the GNU GPL.29|||Mixing and matching these conditions produces sixteen possible combinations, of which eleven are valid Creative Commons licenses and five are not. Of the five invalid combinations, four include both the \"ND\" and \"SA\" clauses, which are mutually exclusive; and one includes none of the clauses. Of the eleven valid combinations, the five that lack the \"BY\" clause have been retired because 98% of licensors requested attribution, though they do remain available for reference on the website.303132 This leaves six regularly used licenses plus the CC0 public domain declaration.|||Six regularly used licensesedit|||The six licenses in most frequent use are shown in the following table. Among them, those accepted by the Wikimedia Foundation – the public domain dedication and two attribution (BY and BY-SA) licenses – allow the sharing and remixing (creating derivative works), including for commercial use, so long as attribution is given.323334|||License name|||Abbreviation|||Icon|||Attribution required|||Allows remix culture|||Allows commercial use|||Allows Free Cultural Works|||Meets the OKF 'Open Definition'|||Attribution|||CC BY|||Yes|||Yes|||Yes|||Yes|||Yes|||Attribution-ShareAlike|||CC BY-SA|||Yes|||Yes|||Yes|||Yes|||Yes|||Attribution-NonCommercial|||CC BY-NC|||Yes|||Yes|||No|||No|||No|||Attribution-NonCommercial-ShareAlike|||CC BY-NC-SA|||Yes|||Yes|||No|||No|||No|||Attribution-NoDerivatives|||CC BY-ND|||Yes|||No|||Yes|||No|||No|||Attribution-NonCommercial-NoDerivatives|||CC BY-NC-ND|||Yes|||No|||No|||No|||No|||Zero, public domain edit|||\"CC0\" redirects here and is not to be confused with CCO (disambiguation).|||Tool name|||Abbreviation|||Icon|||Attribution required|||Allows remix culture|||Allows commercial use|||Allows Free Cultural Works|||Meets the OKF 'Open Definition'|||\"No Rights Reserved\"|||CC0|||No|||Yes|||Yes|||Yes|||Yes|||CC zero public domain dedication tool logo35|||Creative Commons Public Domain Mark. Indicates works which have already fallen into (or were given to) the public domain.|||Besides copyright licenses, Creative Commons also offers CC0, a tool for relinquishing copyright and releasing material into the public domain.34 CC0 is a legal tool for waiving as many rights as legally possible.36 Or, when not legally possible, CC0 acts as fallback as public domain equivalent license.36 Development of CC0 began in 200737 and it was released in 2009.3839 A major target of the license was the scientific data community.40|||In 2010, Creative Commons announced its Public Domain Mark,41 a tool for labeling works already in the public domain. Together, CC0 and the Public Domain Mark replace the Public Domain Dedication and Certification,42 which took a U.S.-centric approach and co-mingled distinct operations.|||In 2011, the Free Software Foundation added CC0 to its free software licenses. However, the Free Software Foundation currently does not recommend using CC0 to release software into the public domain because it explicitly does not grant a patent license.21|||In February 2012, CC0 was submitted to Open Source Initiative (OSI) for their approval.43 However, controversy arose over its clause which excluded from the scope of the license any relevant patents held by the copyright holder. This clause was added for scientific data rather than software, but some members of the OSI believed it could weaken users' defenses against software patents. As a result, Creative Commons withdrew their submission, and the license is not currently approved by the OSI.4044|||From 2013 to 2017, the stock photography website Unsplash used the CC0 license,4546 distributing several million free photos a month.47 Lawrence Lessig, the founder of Creative Commons, has contributed to the site.48 Unsplash moved from using the CC0 license to a custom license in June 201749 and to an explicitly nonfree license in January 2018.|||In October 2014, the Open Knowledge Foundation approved the Creative Commons CC0 as conformant with the Open Definition and recommend the license to dedicate content to the public domain.1011|||In July 2022, Fedora Linux disallowed software licensed under CC0 due to patent rights explicitly not being waived under the license.50|||Retired licensesedit|||Due to either disuse or criticism, a number of previously offered Creative Commons licenses have since been retired,3051 and are no longer recommended for new works. The retired licenses include all licenses lacking the Attribution element other than CC0, as well as the following four licenses:|||Developing Nations License: a license which only applies to developing countries deemed to be \"non-high-income economies\" by the World Bank. Full copyright restrictions apply to people in other countries.52|||Sampling: parts of the work can be used for any purpose other than advertising, but the whole work cannot be copied or modified53|||Sampling Plus: parts of the work can be copied and modified for any purpose other than advertising, and the entire work can be copied for noncommercial purposes54|||NonCommercial Sampling Plus: the whole work or parts of the work can be copied and modified for non-commercial purposes55|||Version 4.0edit|||Main article: Creative Commons jurisdiction ports|||The latest version 4.0 of the Creative Commons licenses, released on November 25, 2013, are generic licenses that are applicable to most jurisdictions and do not usually require ports.56575828 No new ports have been implemented in version 4.0 of the license.59 Version 4.0 discourages using ported versions and instead acts as a single global license.60|||Rights and obligationsedit|||Attributionedit|||Since 2004, all current licenses other than the CC0 variant require attribution of the original author, as signified by the BY component (as in the preposition \"by\").31 The attribution must be given to \"the best of [one's] ability using the information available\".61 Creative Commons suggests the mnemonic \"TASL\": title – author – source [web link] – [CC] licence. Generally this implies the following:|||Include any copyright notices (if applicable). If the work itself contains any copyright notices placed there by the copyright holder, those notices must be left intact, or reproduced in a way that is reasonable to the medium in which the work is being re-published.|||Cite the author's name, screen name, or user ID, etc. If the work is being published on the Internet, it is nice to link that name to the person's profile page, if such a page exists.|||Cite the work's title or name (if applicable), if such a thing exists. If the work is being published on the Internet, it is nice to link the name or title directly to the original work.|||Cite the specific CC license the work is under. If the work is being published on the Internet, it is nice if the license citation links to the license on the CC website.|||Mention if the work is a derivative work or adaptation. In addition to the above, one needs to identify that their work is a derivative work, e.g., \"This is a Finnish translation of [original work] by [author].\" or \"Screenplay based on [original work] by [author].\"|||Non-commercial licensesedit|||Main article: Creative Commons NonCommercial license|||The NonCommercial license allows image creators to restrict selling and profiting from their works by other parties and thus maintaining free of charge access to images.|||The \"non-commercial\" option included in some Creative Commons licenses is controversial in definition,62 as it is sometimes unclear what can be considered a non-commercial setting, and application, since its restrictions differ from the principles of open content promoted by other permissive licenses.63 In 2014 Wikimedia Deutschland published a guide to using Creative Commons licenses as wiki pages for translations and as PDF.26|||Adaptabilityedit|||An example of a permitted combination of two works, one being CC BY-SA and the other being public domain|||Rights in an adaptation can be expressed by a CC license that is compatible with the status or licensing of the original work or works on which the adaptation is based.64 License compatibility chart for combining or mixing two CC licensed works6566|||Legal aspectsedit|||The legal implications of large numbers of works having Creative Commons licensing are difficult to predict, and there is speculation that media creators often lack insight to be able to choose the license which best meets their intent in applying it.67|||Some works licensed using Creative Commons licenses have been involved in several court cases.68 Creative Commons itself was not a party to any of these cases; they only involved licensors or licensees of Creative Commons licenses. When the cases went as far as decisions by judges (that is, they were not dismissed for lack of jurisdiction or were not settled privately out of court), they have all validated the legal robustness of Creative Commons public licenses.|||Further information: Public information licence|||Dutch tabloidedit|||In early 2006, podcaster Adam Curry sued a Dutch tabloid who published photos from Curry's Flickr page without Curry's permission. The photos were licensed under the Creative Commons Non-Commercial license. While the verdict was in favor of Curry, the tabloid avoided having to pay restitution to him as long as they did not repeat the offense. Professor Bernt Hugenholtz, main creator of the Dutch CC license and director of the Institute for Information Law of the University of Amsterdam, commented, \"The Dutch Court's decision is especially noteworthy because it confirms that the conditions of a Creative Commons license automatically apply to the content licensed under it, and binds users of such content even without expressly agreeing to, or having knowledge of, the conditions of the license.\"69707172|||Virgin Mobileedit|||In 2007, Virgin Mobile Australia launched an advertising campaign promoting their cellphone text messaging service using the work of amateur photographers who uploaded their work to Flickr using a Creative Commons-BY (Attribution) license. Users licensing their images this way freed their work for use by any other entity, as long as the original creator was attributed credit, without any other compensation required. Virgin upheld this single restriction by printing a URL leading to the photographer's Flickr page on each of their ads. However, one picture, depicting 15-year-old Alison Chang at a fund-raising carwash for her church,73 caused some controversy when she sued Virgin Mobile. The photo was taken by Alison's church youth counselor, Justin Ho-Wee Wong, who uploaded the image to Flickr under the Creative Commons license.73 In 2008, the case (concerning personality rights rather than copyright as such) was thrown out of a Texas court for lack of jurisdiction.7475|||SGAE vs Fernándezedit|||In the fall of 2006, the collecting society Sociedad General de Autores y Editores (SGAE) in Spain sued Ricardo Andrés Utrera Fernández, owner of a disco bar located in Badajoz who played CC-licensed music. SGAE argued that Fernández should pay royalties for public performance of the music between November 2002 and August 2005. The Lower Court rejected the collecting society's claims because the owner of the bar proved that the music he was using was not managed by the society.76|||In February 2006, the Cultural Association Ladinamo (based in Madrid, and represented by Javier de la Cueva) was granted the use of copyleft music in their public activities. The sentence said:|||Admitting the existence of music equipment, a joint evaluation of the evidence practiced, this court is convinced that the defendant prevents communication of works whose management is entrusted to the plaintiff [SGAE], using a repertoire of authors who have not assigned the exploitation of their rights to the SGAE, having at its disposal a database for that purpose and so it is manifested both by the legal representative of the Association and by Manuela Villa Acosta, in charge of the cultural programming of the association, which is compatible with the alternative character of the Association and its integration in the movement called 'copy left'.77|||GateHouse Media, Inc. v. That's Great News, LLCedit|||On June 30, 2010, GateHouse Media filed a lawsuit against That is Great News, LLC. GateHouse Media owns a number of local newspapers, including Rockford Register Star, which is based in Rockford, Illinois. That is Great News makes plaques out of newspaper articles and sells them to the people featured in the articles.78 GateHouse sued That is Great News for copyright infringement and breach of contract. GateHouse claimed that That is Great News violated the non-commercial and no-derivative works restrictions on GateHouse Creative Commons licensed work when they published the material on their website. The case was settled on August 17, 2010, though the terms of the settlement were not made public.7879|||Drauglis v. Kappa Map Group, LLCedit|||In 2007, photographer Art Drauglis uploaded several pictures to the photo-sharing website Flickr, giving them the Creative Commons Attribution-ShareAlike 2.0 Generic License (CC BY-SA). One photo, titled \"Swain's Lock, Montgomery Co., MD.\", was downloaded by Kappa Map Group, a map-making company, and published in 2012 on the front cover of Montgomery Co. Maryland Street Atlas. The text \"Photo: Swain's Lock, Montgomery Co., MD Photographer: Carly Lesser \u0026 Art Drauglis, Creative Commoms [sic], CC-BY-SA-2.0\" was placed on the back cover, but nothing on the front indicated authorship.|||The validity of CC BY-SA 2.0 as a license was not in dispute. CC BY-SA 2.0 requires that the licensee use nothing less restrictive than the CC BY-SA 2.0 terms. The atlas was sold commercially and not for free reuse by others. The dispute was whether Drauglis' license terms that would apply to \"derivative works\" applied to the entire atlas. Drauglis sued the defendants in June 2014 for copyright infringement and license breach, seeking declaratory and injunctive relief, damages, fees, and costs. Drauglis asserted, among other things, that Kappa Map Group \"exceeded the scope of the License because defendant did not publish the Atlas under a license with the same or similar terms as those under which the Photograph was originally licensed.\"80 The judge dismissed the case on that count, ruling that the atlas was not a derivative work of the photograph in the sense of the license, but rather a collective work. Since the atlas was not a derivative work of the photograph, Kappa Map Group did not need to license the entire atlas under the CC BY-SA 2.0 license. The judge also determined that the work had been properly attributed.81|||In particular, the judge determined that it was sufficient to credit the author of the photo as prominently as authors of similar authorship (such as the authors of individual maps contained in the book) and that the name \"CC-BY-SA-2.0\" is sufficiently precise to locate the correct license on the internet and can be considered a valid identifier for the license.3|||Verband zum Schutz geistigen Eigentums im Internet (VGSE)edit|||In July 2016, German computer magazine LinuxUser reported that a German blogger, Christoph Langner, used two CC BY-licensed photographs from Berlin photographer Dennis Skley on his private blog Linuxundich. Langner duly mentioned the author and the license and added a link to the original. Langner was later contacted by the Verband zum Schutz geistigen Eigentums im Internet (VGSE) (Association for the Protection of Intellectual Property in the Internet) with a demand for €2300 for failing to provide the full name of the work, the full name of the author, the license text, and a source link, as is required by the fine print in the license. Of this sum, €40 was to go to the photographer, with the remainder retained by VGSE.8283 The Higher Regional Court of Cologne dismissed the claim in May 2019.84|||Works with a Creative Commons licenseedit|||Main article: List of major Creative Commons licensed works|||See also: Category:Creative Commons-licensed works|||Number of Creative Commons licensed works as of 2017, per State of the Commons report|||Creative Commons maintains a content directory wiki of organizations and projects using Creative Commons licenses.85 On its website CC also provides case studies of projects using CC licenses across the world.86 CC licensed content can also be accessed through a number of content directories and search engines.|||Unicode symbolsedit|||You may need rendering support to display the uncommon Unicode characters in this section correctly.|||After being proposed by Creative Commons in 2017,87 Creative Commons license symbols were added to Unicode with version 13.0 in 2020.88 The circle with an equal sign (meaning no derivatives) is present in older versions of Unicode, unlike all the other symbols.|||Name|||Unicode|||Decimal|||UTF-8|||Image|||Displayed|||Unicode block|||Circled equalsmeaning no derivatives|||U+229C|||\u0026#8860;|||E2 8A 9C|||⊜|||Mathematical Operators|||Circled zero with slashmeaning no rights reserved|||U+1F10D|||\u0026#127245;|||F0 9F 84 8D|||🄍|||Enclosed Alphanumeric Supplement|||Circled anticlockwise arrowmeaning share alike|||U+1F10E|||\u0026#127246;|||F0 9F 84 8E|||🄎|||Enclosed Alphanumeric Supplement|||Circled dollar sign with overlaid backslashmeaning non-commercial|||U+1F10F|||\u0026#127247;|||F0 9F 84 8F|||🄏|||Enclosed Alphanumeric Supplement|||Circled CCmeaning Creative Commons license|||U+1F16D|||\u0026#127341;|||F0 9F 85 AD|||🅭|||Enclosed Alphanumeric Supplement|||Circled C with overlaid backslashmeaning public domain|||U+1F16E|||\u0026#127342;|||F0 9F 85 AE|||🅮|||Enclosed Alphanumeric Supplement|||Circled human figuremeaning attribution, credit|||U+1F16F|||\u0026#127343;|||F0 9F 85 AF|||🅯|||Enclosed Alphanumeric Supplement|||These symbols can be used in succession to indicate a particular Creative Commons license, for example, CC-BY-SA (CC-Attribution-ShareAlike) can be expressed with Unicode symbols CIRCLED CC, CIRCLED HUMAN FIGURE and CIRCLED ANTICLOCKWISE ARROW placed next to each other: 🅭🅯🄎|||Case law databaseedit|||In December 2020, the Creative Commons organization launched an online database covering licensing case law and legal scholarship.8990|||See alsoedit|||Free and open-source software portal|||Law portal|||Closed captioning – uses a similar CC logo|||Free-culture movement|||Free music|||Free software|||Non-commercial educational station|||Notesedit|||^ A \"work\" is any creative material made by a person. A painting, a graphic, a book, a song and its lyrics, or a photograph of almost anything are all examples of \"works\".|||Referencesedit|||^ Shergill, Sanjeet (May 6, 2017). \"The teacher's guide to Creative Commons licenses\". Open Education Europa. Archived from the original on June 26, 2018. Retrieved March 15, 2018.|||^ \"What are Creative Commons licenses?\". Wageningen University \u0026 Research. June 16, 2015. Archived from the original on March 15, 2018. Retrieved March 15, 2018.|||^ a b \"Creative Commons licenses\". University of Michigan Library. Archived from the original on November 21, 2018. Retrieved March 15, 2018.|||^ \"Creative Commons licenses\" (PDF). University of Glasgow. Archived (PDF) from the original on March 15, 2018. Retrieved March 15, 2018.|||^ \"The Creative Commons licenses\". UNESCO. Archived from the original on March 15, 2018. Retrieved March 15, 2018.|||^ \"License Versions\". Creative Commons Wiki. Archived from the original on June 30, 2017. 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One moment, Alison Chang, a 15-year-old student from Dallas, is cheerfully goofing around at a local church-sponsored car wash, posing with a friend for a photo. Weeks later, that photo is posted online and catches the eye of an ad agency in Australia, and the altered image of Alison appears on a billboard in Adelaide as part of a Virgin Mobile advertising campaign.|||^ Evan Brown (January 22, 2009). \"No personal jurisdiction over Australian defendant in Flickr right of publicity case\". Internet Cases, a blog about law and technology. Archived from the original on July 13, 2011. Retrieved September 25, 2010.|||^ \"Lawsuit Against Virgin Mobile and Creative Commons – FAQ\". September 27, 2007. Archived from the original on September 7, 2011. Retrieved August 31, 2011.|||^ Mia Garlick (March 23, 2006). \"Spanish Court Recognizes CC-Music\". Creative Commons. Archived from the original on September 26, 2023. 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Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization.", "bookmark_id": 12, "bookmark": { "id": 0, "created_at": "0001-01-01T00:00:00Z", "updated_at": "0001-01-01T00:00:00Z", "deleted_at": null, "url": "", "title": "", "notes": "", "domain": "", "favicon": "", "tags": null, "snapshots": null, "collection": null, "public": false, "unread": false, "user_id": 0 }, "size": 499205, "resources": null } ], "collection": null, "public": true, "unread": false, "user_id": 1 }, { "id": 11, "created_at": "2025-05-08T13:48:32.232241066Z", "updated_at": "2025-05-08T13:48:32.232241066Z", "deleted_at": null, "url": "https://en.wikipedia.org/wiki/Free-software_license", "title": "Free-software license - Wikipedia", "notes": "", "domain": "en.wikipedia.org", "favicon": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAKAAAACgCAAAAACupDjxAAAE6ElEQVR4AezOAQEAAAQAIP9PMwPUgiKHExQUFBQUFBQUFBQUFBS8GRQUFBQUFBQUFBQUFBQUFBQUFBQs4szAQ5UujMN/1I+RiLEkElkiRMRHCCEilhDiYkNEliyEi3AJIQsXi2VZliAkiwhZWWGM33dvzrzONHMWbjPzAJz7+R4z5zzvmfa/m0KpWm92evejx+lkPOi1G7VSPmvndjzl7Wyx+mdp8DB9GPa7rUatXMzmPugUU3a+XG/3huPxsN9pVPJ2qkIurfTNn3/fvR89jAbdZrVgp0r/LpiDgVceLYTxzC2ClMkHBLj9d8H3fjnEw64PvsinTj7wf2wNj3Qf7yrQSdcGK/Jj2C5Aw6rcb66yB4/LW/jIzxwqNg1otNf0WLfgUZjLP3cXedEbHa93SJxpGgIKB2rMND9quJ760KHGKqVe+ea6p/hFM3yjj6EsPPn/E5wZ008Xf8nvr52ZX/DIuPThlKBYUOeIv7R4wVSdpKt3UPZUIA3PUPygzg4Asp8UtC3RjSDU25R3JB1e4O22mxM1fgfeuuyI9C4CQf6AYhlIERRzanQANEPKL4/62oIfXg8bND3CMgXuLcAKHtWDBVgfkQiyA8UmcMah+E1hIE8qcEY6jEbwDYo+L6mqlSo99mkgc2CAW+nU9QVZ8UITmAFLKF70HTsiw058hVEJSgunvMD1hmHda0wKsI/hsZpHJniylUbRDdZN8c4zPQATBthZQNaJTJCDwGEQ9yygTY6tBeRODI3giNEJflOaCRRrkrwD8JMBnCxg7SMUZNNYms+MWrkjubaAgsMAC7UeneCzuTT3asX6MB+FmmzSqAR5ayzNzhL3FYCSywArKWV0glNjadhVK6l9Iziw5WjPIxY8ZoylWUNRN8T4mJbGRCfIvrE0bELAs+Hpjxm14BrG0rxC+M+wf6195IKsG0vDKjxeDQW4Y/SCSymNealu+mZ4j0HQyUtpjFeGvBM+hquMQZATc2lmwbu/MAKwiEXwkJLSGK8MJTdsDOecWAR5J6UxP91l2Bh+YDyC71Ia81Il5GMutY9JkFVjadqmUq/laz0OwbmpNGsI9eAYXsUmeLoxlKYFAW+XI7zG2AQ5DJRGdqC8/ublGF7EKLizQkvTAKxtQ7v7CyVpTDyCbIWV5u28K1+g6FB4kcbEJSgWDf81Ir2nnHFrqx/u1CFWQZakND7poX5l6Om/I3UZr+BPKY2eYvuTpFuUu782hlcxC35lpDTade/Rf2W45xknJzfY+AT547I0VfktQa4MmYOM4WXsghv4S/MEYHZ5ZRh77z7vxC7Ihr80ZeDWufyVwf5S82/C+AWffKVZ+l7jQH//fSB9SEDQLWilcUtAJWTS5JzzGO4yAUE+an8emV9csLpQzM5BWiUieEhLaZwiUA+9dxWdkjQmXkH9MU1/Bb4omzJOZHPGL7iSx1QA2sZfGaQxsQuyBsHamNcmTEpwAaFnqpA0JglBJysSO/N9p8fEBDmCYvDNH1XWCQruVZDtAwM4Ofm8S06QbTkGxpA/JScoNcmeGMLRPjfGTVSQZQD4+c3H6SOTFZydx5lhh6aA9GfCgif7my/ynjQmOUGOv7kKbO30JnFB7lwa+Tr+364dCwAAAAAI87cOo2cRDCD/ICAgICAgICDgEyAgICAgICAgICAgICAgICBgYUeNfR+Kw20AAAAASUVORK5CYII=", "tags": [ { "id": 1, "created_at": "2025-04-02T14:11:26.52753391Z", "updated_at": "2025-04-02T14:11:26.52753391Z", "deleted_at": null, "text": "wikipedia", "bookmarks": null }, { "id": 5, "created_at": "2025-04-02T14:13:58.496800641Z", "updated_at": "2025-04-02T14:13:58.496800641Z", "deleted_at": null, "text": "free software", "bookmarks": null }, { "id": 14, "created_at": "2025-05-08T13:32:57.497130706Z", "updated_at": "2025-05-08T13:32:57.497130706Z", "deleted_at": null, "text": "license", "bookmarks": null } ], "snapshots": [ { "id": 11, "created_at": "2025-05-08T13:48:32.267883003Z", "updated_at": "2025-05-08T13:48:32.820029113Z", "deleted_at": null, "title": "", "key": "e43ba18bfa86aaad8ca24c12dd821ea9bf08f4a229d51f8cc112eecf4b0e116a", "text": "Search|||Donate|||Create account|||Log in|||Contents hide|||(Top)|||Comparison|||History|||Pre-1980s|||1980s|||1990s to 2000s|||2010s|||Definitions|||OSI-approved open-source licenses|||FSF-approved free-software licenses|||Conditions in free-software licenses|||Copyleft|||Patent retaliation|||Attribution, disclaimers and notices|||Practical problems with licenses|||License compatibility|||Purpose of use|||Definition conflicts|||Permissive versus copyleft opinions|||Debian|||Controversial borderline cases|||Market share|||See also|||Notes|||References|||External links|||Free-software license|||20 languages|||Tools|||Appearance hide|||Text|||Small|||Standard|||Large|||Width|||Standard|||Wide|||Color (beta)|||Automatic|||Light|||Dark|||From Wikipedia, the free encyclopedia|||The free-software-licensing spectrum and some examples of programs under those licenses1|||Copyleft|||Articles on copyleft licensing|||Topics|||Copyleft|||Open-source license|||Free-software license|||Free and open-source software|||Royalty-free|||Higher categories: Software, freedom|||Category:Free and open-sourcesoftware licenses|||v|||t|||e|||A free-software license is a notice that grants the recipient of a piece of software extensive rights to modify and redistribute that software. These actions are usually prohibited by copyright law, but the rights-holder (usually the author) of a piece of software can remove these restrictions by accompanying the software with a software license which grants the recipient these rights. Software using such a license is free software (or free and open-source software) as conferred by the copyright holder. Free-software licenses are applied to software in source code and also binary object-code form, as the copyright law recognizes both forms.2|||Comparisonedit Types of software license and similar licenses. The highlighted columns are free software.|||Public domain \u0026 equivalents|||Permissive license|||Copyleft (protective license)|||Noncommercial license|||Proprietary license|||Trade secret|||Description|||Grants all rights|||Grants use rights, including right to relicense (allows proprietization, license compatibility)|||Grants use rights, forbids proprietization|||Grants rights for noncommercial use only. May be combined with copyleft.|||Traditional use of copyright; no rights need to be granted|||No information is made public|||Software|||Unlicense|||MIT, Apache, MPL|||GPL, AGPL|||JRL, AFPL|||proprietary software, no public license|||private, internal software|||Other creative works|||PD, CC0|||CC BY|||CC BY-SA|||CC BY-NC|||Copyright, no public license|||unpublished|||Free-software licenses provide risk mitigation against different legal threats or behaviors that are seen as potentially harmful by developers: Frequently used protective and permissive licenses|||AGPLv3|||GPLv3|||GPLv2|||LGPLv3|||LGPLv2.1|||MPL-2|||BSD|||SaaS/cloud|||Yes|||No|||No|||No|||No|||No|||No|||Tivoization|||Yes|||Yes|||No|||Yes|||No|||No|||No|||Patent trolling|||Yes|||Yes|||No|||Yes|||No|||No|||No|||Proprietization|||Yes|||Yes|||Yes|||Partial|||Partial|||Partial|||No|||Granularity / reach|||Project|||Project|||Project|||Library|||Library|||File|||—|||Trademark grant|||Yes|||Yes|||?|||Yes|||?|||No|||No|||Historyedit|||See also: History of free and open-source software|||Pre-1980sedit|||In the early times of software, sharing of software and source code was common in certain communities, for instance academic institutions. Before the US Commission on New Technological Uses of Copyrighted Works (CONTU) decided in 1974 that \"computer programs, to the extent that they embody an author's original creation, are proper subject matter of copyright\",34 software was not considered copyrightable. Therefore, software had no licenses attached and was shared as public-domain software. The CONTU decision plus court decisions such as Apple v. Franklin in 1983 for object code, clarified that the Copyright Act gave computer programs the copyright status of literary works and started the licensing of software.|||Free-software licenses before the late 1980s were generally informal notices written by the developers themselves. These early licenses were of the \"permissive\" kind.|||1980sedit|||In the mid-1980s, the GNU project produced copyleft free-software licenses for each of its software packages. An early such license (the \"GNU Emacs Copying Permission Notice\") was used for GNU Emacs in 1985,5 which was revised into the \"GNU Emacs General Public License\" in late 1985, and clarified in March 1987 and February 1988.678 Likewise, the similar GCC General Public License was applied to the GNU Compiler Collection, which was initially published in 1987.910 The original BSD license is also one of the first free-software licenses, dating to 1988. In 1989, version 1 of the GNU General Public License (GPL) was published. Version 2 of the GPL, released in 1991, went on to become the most widely used free-software license.111213|||1990s to 2000sedit|||Starting in the mid-1990s and until the mid-2000s, the open-source movement pushed and focused the free-software idea forward in the wider public and business perception.14 In the Dot-com bubble time, Netscape Communications' step to release its webbrowser under a FOSS license in 1998,1516 inspired many other companies to adapt to the FOSS ecosystem.17 In this trend companies and new projects (Mozilla, Apache foundation, and Sun, see also this list) wrote their own FOSS licenses, or adapted existing licenses. This License proliferation was later recognized as problem for the Free and open-source ecosystem due to the increased complexity of license compatibility considerations.18 While the creation of new licenses slowed down later, license proliferation and its impact are considered an ongoing serious challenge for the free and open-source ecosystem.|||From the free-software licenses, the GNU GPL version 2 has been tested in to court, first in Germany in 2004 and later in the US. In the German case the judge did not explicitly discuss the validity of the GPL's clauses but accepted that the GPL had to be adhered to: \"If the GPL were not agreed upon by the parties, defendant would notwithstanding lack the necessary rights to copy, distribute, and make the software 'netfilter/iptables' publicly available.\" Because the defendant did not comply with the GPL, it had to cease use of the software.19 The US case (MySQL vs Progress) was settled before a verdict was arrived at, but at an initial hearing, Judge Saris \"saw no reason\" that the GPL would not be enforceable.20|||Around 2004 lawyer Lawrence Rosen argued in the essay Why the public domain isn't a license software could not truly be waived into public domain and can't be interpreted as very permissive FOSS license,21 a position which faced opposition by Daniel J. Bernstein and others.22 In 2012 the dispute was finally resolved when Rosen accepted the CC0 as open source license, while admitting that contrary to his previous claims copyright can be waived away, backed by Ninth circuit decisions.23|||In 2007, after years of draft discussion, the GPLv3 as major update of the GPLv2 was released. The release was controversial24 due to the significant extended scope of the license, which made it incompatible with the GPLv2.25 Several major FOSS projects (Linux kernel,2627 MySQL,28 BusyBox,2930 Blender,31 VLC media player32) decided against adopting the GPLv3. On the other hand, in 2009, two years after the release of the GPLv3, Google open-source programs office manager Chris DiBona reported that the number of open-source projects licensed software that had moved to GPLv3 from GPLv2 was 50%, counting the projects hosted at Google Code.33|||2010sedit|||In 2011, four years after the release of the GPLv3, 6.5% of all open-source licensed projects were GPLv3 while 42.5% were still GPLv2 according to Black Duck Software data.2734 Following in 2011 451 Group analyst Matthew Aslett argued in a blog post that copyleft licenses went into decline and permissive licenses increased, based on statistics from Black Duck Software.3536|||In 2015 according to Black Duck Software37 and GitHub statistics,38 the permissive MIT license dethroned the GPLv2 as most popular free-software license to the second place while the permissive Apache license follows already at third place. In June 2016 an analysis of Fedora Project's packages revealed as most used licenses the GPL, MIT, BSD, and the LGPL.39|||Definitionsedit|||OSI-approved open-source licensesedit|||Main article: Open-source license|||The group Open Source Initiative (OSI) defines and maintains a list of approved open-source licenses. OSI agrees with FSF on all widely used free-software licenses, but differ from FSF's list, as it approves against the Open Source Definition rather than the Free Software Definition. It considers Free Software Permissive license group to be a reference implementation of a Free Software license.[citation needed][clarification needed] Thus its requirements for approving licenses are different.|||FSF-approved free-software licensesedit|||The Free Software Foundation, the group that maintains the Free Software Definition, maintains a non-exhaustive list of free-software licences.40|||The Free Software Foundation prefers copyleft (share-alike) free-software licensing rather than permissive free-software licensing for most purposes. Its list distinguishes between free-software licenses that are compatible or incompatible with the FSF's copyleft GNU General Public License.|||Conditions in free-software licensesedit|||There exists an ongoing debate within the free-software community regarding the fine line between what restrictions can be applied and still be called \"free\".[citation needed]|||Only \"public-domain software\" and software under a public-domain-like license is restriction-free.[citation needed] Examples of public-domain-like licenses are, for instance, the WTFPL and the CC0 license. Permissive licenses might carry small obligations like attribution of the author but allow practically all code use cases. Certain licenses, namely the copyleft licenses, include intentionally stronger restrictions (especially on the distribution/distributor) in order to force derived projects to guarantee specific rights which can't be taken away.|||Copyleftedit|||Main article: copyleft|||The free-software share-alike licenses written by Richard Stallman in the mid-1980s pioneered a concept known as \"copyleft\". Ensuing copyleft provisions stated that when modified versions of free software are distributed, they must be distributed under the same terms as the original software. Hence they are referred to as \"share and share alike\" or \"quid pro quo\". This results in the new software being open source as well. Since copyleft ensures that later generations of the software grant the freedom to modify the code, this is \"free software\". Non-copyleft licenses do not ensure that later generations of the software will remain free.|||Developers who use GPL code in their product must make the source code available to anyone when they share or sell the object code. In this case, the source code must also contain any changes the developers may have made. If GPL code is used but not shared or sold, the code is not required to be made available and any changes may remain private. This permits developers and organizations to use and modify GPL code for private purposes (that is, when the code or the project is not sold or otherwise shared) without being required to make their changes available to the public.|||Supporters of GPL claim that by mandating that derivative works remain under the GPL, it fosters the growth of free software and requires equal participation by all users. Opponents of GPL claim41 that \"no license can guarantee future software availability\" and that the disadvantages of GPL outweigh42 its advantages. Some also argue that restricting distribution makes the license less free. Whereas proponents would argue that not preserving freedom during distribution would make it less free. For example, a non-copyleft license does not grant the author the freedom to see modified versions of his or her work if it gets publicly published, whereas a copyleft license does grant that freedom.|||Patent retaliationedit|||Further information: Patent retaliation|||During the 1990s, free-software licenses began including clauses, such as patent retaliation, in order to protect against software patent litigation cases – a problem which had not previously existed. This new threat was one of the reasons for writing version 3 of the GNU GPL in 2006.43 In recent years, a term coined tivoization describes a process where hardware restrictions are used to prevent users from running modified versions of the software on that hardware, in which the TiVo device is an example. It is viewed by the FSF as a way to turn free software to effectively non-free, and is why they have chosen to prohibit it in GPLv3.44 Most newly written free-software licenses since the late 1990s include some form of patent retaliation clauses. These measures stipulate that one's rights under the license (such as to redistribution), may be terminated if one attempts to enforce patents relating to the licensed software, under certain circumstances. As an example, the Apple Public Source License may terminate a user's rights if said user embarks on litigation proceedings against them due to patent litigation. Patent retaliation emerged in response to proliferation and abuse of software patents.|||Attribution, disclaimers and noticesedit|||The majority of free-software licenses require that modified software not claim to be unmodified. Some licenses also require that copyright holders be credited. One such example is version 2 of the GNU GPL, which requires that interactive programs that print warranty or license information, may not have these notices removed from modified versions intended for distribution.|||Practical problems with licensesedit|||License compatibilityedit|||License compatibility between common FOSS software licenses according to David A. Wheeler (2007): the vector arrows denote a one directional compatibility, therefore better compatibility on the left side (\"permissive licenses\") than on the right side (\"copyleft licenses\").45|||Main article: License compatibility|||Licenses of software packages containing contradictory requirements render it impossible to combine source code from such packages in order to create new software packages.46 License compatibility between a copyleft license and another license is often only a one-way compatibility.47 This \"one-way compatibility\" characteristic is, for instanced, criticized by the Apache Foundation, who provides the more permissive Apache license which doesn't have this characteristic.48 Non-copyleft licenses, such as the FOSS permissive licenses, have a less complicated license interaction and normally exhibit better license compatibility.4950 For example, if one license says \"modified versions must mention the developers in any advertising materials\", and another license says \"modified versions cannot contain additional attribution requirements\", then, if someone combined a software package which uses one license with a software package which uses the other, it would be impossible to distribute the combination because these contradictory requirements cannot be fulfilled simultaneously. Thus, these two packages would be license-incompatible. When it comes to copyleft software licenses, they are not inherently compatible with other copyleft licenses, even the GPLv2 is, by itself, not compatible with the GPLv3.2551|||Purpose of useedit|||Restrictions on use of a software (\"use restrictions\") are generally unacceptable according to the FSF, OSI, Debian, or the BSD-based distributions. Examples include prohibiting that the software be used for non-private applications, for military purposes, for comparison or benchmarking, for good use,[clarification needed] for ethically questionable means,52 or in commercial organizations.53 While some restrictions on user freedom, e.g. concerning nuclear war, seem to enjoy moral support among most free software developers,54 it is generally believed that such agendas should not be served through software licenses; among other things because of practical aspects such as resulting legal uncertainties and problems with enforceability of vague, broad and/or subjective criteria or because tool makers are generally not held responsible for other people's use of their tools. Nevertheless some projects include legally non-binding pleas to the user, prominently SQLite.55 Among the repeated attempts565758 by developers to regulate user behavior through the license that sparked wider debate are Douglas Crockford's (joking) “no evil” clause, which affected the release process of the Debian distribution in 201259 and got the JSMin-PHP project expelled from Google Code,60 the addition of a pacifist condition based on Asimov's First Law of Robotics to the GPL for the distributed computing software GPU in 2005,61 as well as several software projects trying to exclude use by big cloud providers.6263|||Definition conflictsedit|||As there are several defining organizations and groups who publish definitions and guidelines about FOSS licenses, notably the FSF, the OSI, the Debian project, and the BSDs, there are sometimes conflicting opinions and interpretations.|||Permissive versus copyleft opinionsedit|||This section may be unbalanced toward certain viewpoints. Please improve the article by adding information on neglected viewpoints, or discuss the issue on the talk page. (July 2020)|||Many users and developers of BSD-based operating systems have a different position on licensing. The main difference is the belief that the copyleft licenses, particularly the GNU General Public License (GPL), are undesirably complicated and/or restrictive.64 The GPL requires any derivative work to also be released according to the GPL while the BSD license does not. Essentially, the BSD license's only requirement is to acknowledge the original authors, and poses no restrictions on how the source code may be used.|||As a result, BSD code can be used in proprietary software that only acknowledges the authors. For instance, Microsoft Windows NT 3.1 and macOS have proprietary IP stacks which are derived from BSD-licensed software.65 In extreme cases, the sub- or re-licensing possibilities with BSD or other permissive licenses might prevent further use in the open-source ecosystem. For instance, MathWorks' FileExchange repository offers the BSD license for user contributions but prevents with additional terms of use any usage beside their own proprietary MATLAB software, for instance with the FOSS GNU Octave software.666768|||Supporters of the BSD license argue that it is more free than the GPL because it grants the right to do anything with the source code, provided that the attribution is preserved. The approach has led to BSD code being used in widely used proprietary software. Proponents of the GPL point out that once code becomes proprietary, users are denied the freedoms that define free software.69 As a result, they consider the BSD license less free than the GPL, and that freedom is more than a lack of restriction. Since the BSD license restricts the right of developers to have changes recontributed to the community,[dubious – discuss] neither it nor the GPL is \"free\" in the sense of \"lacking any restrictions.\"|||Debianedit|||The Debian project uses the criteria laid out in its Debian Free Software Guidelines (DFSG). The only notable cases where Debian and Free Software Foundation disagree are over the Artistic License and the GNU Free Documentation License (GFDL). Debian accepts the original Artistic License as being a free software license, but FSF disagrees. This has very little impact however since the Artistic License is almost always used in a dual-license setup, along with the GNU General Public License.|||Controversial borderline casesedit|||The vast majority of free software uses undisputed free-software licenses; however, there have been many debates over whether or not certain other licenses qualify for the definition.|||Examples of licenses that provoked debate were the 1.x series of the Apple Public Source License, which were accepted by the Open Source Initiative but not by the Free Software Foundation or Debian and the RealNetworks Public Source License, which was accepted by Open Source Initiative and Free Software Foundation but not by Debian.|||Also, the FSF recommended GNU Free Documentation License,70 which is incompatible with the GPL,71 was considered \"non-free\" by the Debian project around 2006,72 Nathanael Nerode,73 and Bruce Perens.74 The FSF argues that documentation is qualitatively different from software and is subject to different requirements. Debian accepted, in a later resolution, that the GNU FDL complied with the Debian Free Software Guidelines when the controversial \"invariant section\" is removed, but considers it \"still not free of trouble\".75 Notwithstanding, most GNU documentation includes \"invariant sections\". Similarly, the FLOSS Manuals foundation, an organization devoted to creating manuals for free software, decided to eschew the GFDL in favor of the GPL for its texts in 2007, citing the incompatibility between the two, difficulties in implementing the GFDL, and the fact that the GFDL \"does not allow for easy duplication and modification\", especially for digital documentation.76|||SLUC is a software license published in Spain in December 2006 to allow all but military use. The writers of the license maintain it is free software, but the Free Software Foundation says it is not free because it infringes the so-called \"zero freedom\" of the GPL, that is, the freedom to use the software for any purpose.77|||Market shareedit|||While historically the most widely used FOSS license has been the GPLv2, in 2015, according to Black Duck Software37 the permissive MIT license dethroned the GPLv2 to the second place while the permissive Apache License follows at third place. A study from 2012, which used publicly available data, criticized Black Duck Software for not publishing their methodology used in collecting statistics.78 Daniel German, professor in the Department of Computer Science at the University of Victoria in Canada, presented a talk in 2013 about the methodological challenges in determining which are the most widely used free-software licenses, and showed how he could not replicate the result from Black Duck Software.79|||A GitHub study in 2015 on their statistical data found that the MIT license was the most prominent FOSS license on that platform.38|||In June 2016 an analysis of the Fedora Project's packages showed as most used licenses the GPL family, followed by MIT, BSD, the LGP family, Artistic (for Perl packages), LPPL (for texlive packages), and ASL. The GNU GPLv2+ was the single most popular license39|||See alsoedit|||Free and open-source software portal|||Comparison of free and open-source software licenses|||Developer Certificate of Origin|||End-user license agreement|||License-free software|||List of free-content licences|||Public domain|||Software license|||Notesedit|||^ Wheeler, David A. (2015). \"The fight for freedom\". Archived from the original on 4 July 2017. Retrieved 17 February 2016.|||^ Hancock, Terry (29 August 2008). \"What if copyright didn't apply to binary executables?\". Free Software Magazine. Archived from the original on 25 January 2016. Retrieved 25 January 2016.|||^ Apple Computer, Inc. v. Franklin Computer Corporation Puts the Byte Back into Copyright Protection for Computer Programs in Golden Gate University Law Review Volume 14, Issue 2, Article 3 by Jan L. Nussbaum (January 1984)|||^ Lemley, Menell, Merges and Samuelson. Software and Internet Law, p. 34.|||^ \"GNU Emacs Copying Permission Notice (1985)\". GitHub. Retrieved 8 November 2015.|||^ \"GPLv3 - Transcript of Richard Stallman from the third international GPLv3 conference, Barcelona; 2006-06-22 - FSFE\". Retrieved 15 July 2021.|||^ Rubin, Paul (12 December 1985). \"Montgomery EMACS : when did it leave the Public Domain ?\". Newsgroup: net.emacs. The latter is covered by the GNU Emacs General Public License, which says that sources of anything using it must be available for free to everyone.|||^ \"Free Software - GPL Enforcement\". Tech Insider. Retrieved 1 May 2015.|||^ \"GCC Releases\". Retrieved 19 March 2015.|||^ \"GPLv3 - Transcript of Richard Stallman from the second international GPLv3 conference, Porto Alegre, Brazil; 2006-04-21\". Fsfe - Free Software Foundation Europe. Archived from the original on 15 June 2010. Retrieved 19 March 2015.|||^ Mark (8 May 2008). \"The Curse of Open Source License Proliferation\". socializedsoftware.com. Archived from the original on 8 December 2015. Retrieved 30 November 2015. GNU General Public License (GPL) 2.0 58.69% GNU Lesser General Public License (LGPL) 2.1 11.39% Artistic License (Perl) 7.46% BSD License 6.50% Apache License 2.0 2.92% MIT License 2.58% GNU General Public License (GPL) 3.0 1.64% Mozilla Public License (MPL) 1.1 1.37% Common Public License 0.83% zlib/lippng License 0.64%|||^ David A. Wheeler. \"Estimating Linux's Size\".|||^ \"SourceForge.net: Software Map\". Dwheeler.com. Archived from the original on 13 February 2017. Retrieved 17 November 2008. License -\u003e OSI: […] GNU General Public License (GPL) (32641 projects), GNU Library or Lesser General Public License (LGPL) (4889 projects of 45727, 82.1%)|||^ Kelty, Christpher M. (2008). \"The Cultural Significance of free Software - Two Bits\" (PDF). Duke University press - durham and london. p. 99. Prior to 1998, Free Software referred either to the Free Software Foundation (and the watchful, micromanaging eye of Stallman) or to one of thousands of different commercial, avocational, or university-research projects, processes, licenses, and ideologies that had a variety of names: sourceware, freeware, shareware, open software, public domain software, and so on. The term Open Source, by contrast, sought to encompass them all in one movement.|||^ \"Netscape Announces Plans to Make Next-Generation Communicator Source Code Available Free on the Net\". Netscape Communications Corporation. 22 January 1998. Archived from the original on 1 April 2007. Retrieved 8 August 2013. Bold move to harness creative power of thousands of internet developers; company makes Netscape Navigator and Communicator 4.0 immediately free for all users, seeding market for enterprise and netcenter businesses|||^ \"MOUNTAIN VIEW, Calif., April 1 /PRNewswire/ -- Netscape Communications and open source developers are celebrating the first anniversary, March 31, 1999, of the release of Netscape's browser source code to mozilla.org\". Netscape Communications. 31 March 1999. Archived from the original on 26 March 2014. Retrieved 10 January 2013. ... the organization that manages open source developers working on the next generation of Netscape's browser and communication software. This event marked a historical milestone for the Internet as Netscape became the first major commercial software company to open its source code, a trend that has since been followed by several other corporations. Since the code was first published on the Internet, thousands of individuals and organizations have downloaded it and made hundreds of contributions to the software. Mozilla.org is now celebrating this one-year anniversary with a party Thursday night in San Francisco.|||^ Kelty, Christpher M. (2008). \"The Cultural Significance of free Software - Two Bits\" (PDF). Duke University press - durham and london. p. 100. The term Open Source, by contrast, sought to encompass them all in one movement. The event that precipitated this attempted semantic coup d'état was the release of the source code for Netscape's Communicator Web browser. It's tough to overestimate the importance of Netscape to the fortunes of Free Software. […] But Netscape is far more famous among geeks for giving away something else, in 1998: the source code to Netscape Communicator (née Navigator).|||^ \"Report of License Proliferation Committee and draft FAQ\". Open Source Initiative. 12 December 2007.|||^ \"Groklaw - The German GPL Order - Translated\". Retrieved 19 March 2015.|||^ See Progress Software Corporation v. MySQL AB, 195 F. Supp. 2d 328 (D. Mass. 2002), on defendant's motion for preliminary injunction.|||^ Lawrence Rosen (25 May 2004). \"Why the public domain isn't a license\". rosenlaw.com. Retrieved 22 February 2016.|||^ Bernstein, Daniel J. (2004). \"Placing documents into the public domain\". Most rights can be voluntarily abandoned (\"waived\") by the owner of the rights. Legislators can go to extra effort to create rights that can't be abandoned, but usually they don't do this. In particular, you can voluntarily abandon your United States copyrights: \"It is well settled that rights gained under the Copyright Act may be abandoned. But abandonment of a right must be manifested by some overt act indicating an intention to abandon that right. See Hampton v. Paramount Pictures Corp., 279 F.2d 100, 104 (9th Cir. 1960).\"|||^ Lawrence Rosen (8 March 2012). \"(License-review) (License-discuss) CC0 incompliant with OSD on patents, (was: MXM compared to CC0)\". opensource.org. Archived from the original on 12 March 2016. Retrieved 22 February 2016. The case you referenced in your email, Hampton v. Paramount Pictures, 279 F.2d 100 (9th Cir. Cal. 1960), stands for the proposition that, at least in the Ninth Circuit, a person can indeed abandon his copyrights (counter to what I wrote in my article) -- but it takes the equivalent of a manifest license to do so. :-) ... For the record, I have already voted +1 to approve the CC0 public domain dedication and fallback license as OSD compliant. I admit that I have argued for years against the \"public domain\" as an open source license, but in retrospect, considering the minimal risk to developers and users relying on such software and the evident popularity of that \"license\", I changed my mind. One can't stand in the way of a fire hose of free public domain software, even if it doesn't come with a better FOSS license that I trust more.|||^ Mark (8 May 2008). \"The Curse of Open Source License Proliferation\". socializedsoftware.com. Archived from the original on 8 December 2015. Retrieved 30 November 2015. Currently the decision to move from GPL v2 to GPL v3 is being hotly debated by many open source projects. According to Palamida, a provider of IP compliance software, there have been roughly 2489 open source projects that have moved from GPLv2 to later versions.|||^ a b \"Frequently Asked Questions about the GNU Licenses – Is GPLv3 compatible with GPLv2?\". gnu.org. Retrieved 3 June 2014. No. Some of the requirements in GPLv3, such as the requirement to provide Installation Information, do not exist in GPLv2. As a result, the licenses are not compatible: if you tried to combine code released under both these licenses, you would violate section 6 of GPLv2. However, if code is released under GPL 'version 2 or later,' that is compatible with GPLv3 because GPLv3 is one of the options it permits.|||^ Kerner, Sean Michael (8 January 2008). \"Torvalds Still Keen On GPLv2\". internetnews.com. Retrieved 12 February 2015. In some ways, Linux was the project that really made the split clear between what the FSF is pushing which is very different from what open source and Linux has always been about, which is more of a technical superiority instead of a -- this religious belief in freedom,\" Torvalds told Zemlin. So, the GPL Version 3 reflects the FSF's goals and the GPL Version 2 pretty closely matches what I think a license should do and so right now, Version 2 is where the kernel is.|||^ a b Byfield, Bruce (22 November 2011). \"7 Reasons Why Free Software Is Losing Influence: Page 2\". Datamation.com. Retrieved 23 August 2013. At the time, the decision seemed sensible in the face of a deadlock. But now, GPLv2 is used for 42.5% of free software, and GPLv3 for less than 6.5%, according to Black Duck Software.|||^ \"MySQL changes license to avoid GPLv3\". Computer business review online. 4 January 2007. Archived from the original on 6 February 2007. Retrieved 21 November 2016.|||^ corbet (1 October 2006). \"Busy busy busybox\". lwn.net. Retrieved 21 November 2015. Since BusyBox can be found in so many embedded systems, it finds itself at the core of the GPLv3 anti-DRM debate. […] The real outcomes, however, are this: BusyBox will be GPLv2 only starting with the next release. It is generally accepted that stripping out the \"or any later version\" is legally defensible, and that the merging of other GPLv2-only code will force that issue in any case.|||^ Landley, Rob (9 September 2006). \"Re: Move GPLv2 vs v3 fun...\" lwn.net. Retrieved 21 November 2015. Don't invent a straw man argument please. I consider licensing BusyBox under GPLv3 to be useless, unnecessary, overcomplicated, and confusing, and in addition to that it has actual downsides. 1) Useless: We're never dropping GPLv2.|||^ Prokoudine, Alexandre (26 January 2012). \"What's up with DWG adoption in free software?\". libregraphicsworld.org. Archived from the original on 9 November 2016. Retrieved 5 December 2015. Blender is also still 'GPLv2 or later'. For the time being we stick to that, moving to GPL 3 has no evident benefits I know of.|||^ Denis-Courmont, Rémi. \"VLC media player to remain under GNU GPL version 2\". videolan.org. Retrieved 21 November 2015. In 2001, VLC was released under the OSI-approved GNU General Public version 2, with the commonly-offered option to use 'any later version' thereof (though there was not any such later version at the time). Following the release by the Free Software Foundation (FSF) of the new version 3 of its GNU General Public License (GPL) on the 29th of June 2007, contributors to the VLC media player, and other software projects hosted at videolan.org, debated the possibility of updating the licensing terms for future version of the VLC media player and other hosted projects, to version 3 of the GPL. ... There is strong concern that these new additional requirements might not match the industrial and economic reality of our time, especially in the market of consumer electronics. It is our belief that changing our licensing terms to GPL version 3 would currently not be in the best interest of our community as a whole. Consequently, we plan to keep distributing future versions of VLC media player under the terms of the GPL version 2.|||^ Asay, Matt (23 July 2009). \"GPLv3 hits 50 percent adoption | The Open Road - CNET News\". News.cnet.com. Archived from the original on 29 October 2013. Retrieved 2 September 2013.|||^ Proffitt, Brian (16 December 2011). \"GPL, copyleft use declining faster than ever\". ITworld. Archived from the original on 4 September 2017. Retrieved 17 February 2016.|||^ Proffitt, Brian (16 December 2011). \"GPL, copyleft use declining faster than ever - Data suggests a sharper rate of decline, which raises the question: why?\". IT world. Archived from the original on 3 December 2013. Retrieved 23 August 2013.|||^ Aslett, Matthew (15 December 2011). \"On the continuing decline of the GPL\". Archived from the original on 9 December 2016. Retrieved 17 February 2016.|||^ a b \"Top 20 licenses\". Black Duck Software. 19 November 2015. Archived from the original on 19 July 2016. Retrieved 19 November 2015. 1. MIT license 24%, 2. GNU General Public License (GPL) 2.0 23%, 3. Apache License 16%, 4. GNU General Public License (GPL) 3.0 9%, 5. BSD License 2.0 (3-clause, New or Revised) License 6%, 6. GNU Lesser General Public License (LGPL) 2.1 5%, 7. Artistic License (Perl) 4%, 8. GNU Lesser General Public License (LGPL) 3.0 2%, 9. Microsoft Public License 2%, 10. Eclipse Public License (EPL) 2%|||^ a b Balter, Ben (9 March 2015). \"Open source license usage on GitHub.com\". github.com. Retrieved 21 November 2015. 1 MIT 44.69%, 2 Other 15.68%, 3 GPLv2 12.96%, 4 Apache 11.19%, 5 GPLv3 8.88%, 6 BSD 3-clause 4.53%, 7 Unlicense 1.87%, 8 BSD 2-clause 1.70%, 9 LGPLv3 1.30%, 10 AGPLv3 1.05%|||^ a b Anwesha Das (22 June 2016). \"Software Licenses in Fedora Ecosystem\". anweshadas.in. Retrieved 27 June 2016. From the above chart it is clear that the GPL family is the highest used (I had miscalculated it as MIT before).The other major licenses are MIT, BSD, the LGPL family, Artistic (for Perl packages), LPPL (foe texlive packages), ASL.|||^ \"Various Licenses and Comments about Them - GNU Project - Free Software Foundation\". Retrieved 19 March 2015.|||^ \"Why you should use a BSD style license for your Open Source Project\". Retrieved 19 March 2015.|||^ \"Why you should use a BSD style license for your Open Source Project\". Retrieved 19 March 2015.|||^ \"GPLv3 - Transcript of Richard Stallman from the fifth international GPLv3 conference, Tokyo, Japan; 2006-11-21\". Retrieved 19 March 2015.|||^ \"Richard Stallman discusses changes in GPLv3\". a new method of trying to deprive the users of freedom. In broad terms we refer to this as tivoization.|||^ Wheeler, David A. (27 September 2007). \"The Free-Libre / Open Source Software (FLOSS) License Slide\". Archived from the original on 9 March 2011. Retrieved 28 November 2015.|||^ \"How GPLv3 tackles license proliferation\". Archived from the original on 2 May 2013.|||^ LAURENT, Philippe (24 September 2008). \"The GPLv3 and compatibility issues\" (PDF). European Open source Lawyers Event 2008. University of Namur – Belgium. p. 7. Archived from the original (PDF) on 4 March 2016. Retrieved 30 May 2015. Copyleft is the main source of compatibility problems.|||^ Apache foundation (30 May 2015). \"GPL compatibility\". Retrieved 30 May 2015. Apache 2 software can therefore be included in GPLv3 projects, because the GPLv3 license accepts our software into GPLv3 works. However, GPLv3 software cannot be included in Apache projects. The licenses are incompatible in one direction only, and it is a result of ASF's licensing philosophy and the GPLv3 authors' interpretation of copyright law.|||^ Hanwell, Marcus D. (28 January 2014). \"Should I use a permissive license? Copyleft? Or something in the middle?\". opensource.com. Retrieved 30 May 2015. Permissive licensing simplifies things One reason the business world, and more and more developers […], favor permissive licenses is in the simplicity of reuse. The license usually only pertains to the source code that is licensed and makes no attempt to infer any conditions upon any other component, and because of this there is no need to define what constitutes a derived work. I have also never seen a license compatibility chart for permissive licenses; it seems that they are all compatible.|||^ \"Licence Compatibility and Interoperability\". Open-Source Software - Develop, share, and reuse open source software for public administrations. joinup.ec.europa.eu. Archived from the original on 17 June 2015. Retrieved 30 May 2015. The licences for distributing free or open source software (FOSS) are divided in two families: permissive and copyleft. Permissive licences (BSD, MIT, X11, Apache, Zope) are generally compatible and interoperable with most other licences, tolerating to merge, combine or improve the covered code and to re-distribute it under many licences (including non-free or 'proprietary').|||^ Landley, Rob. \"CELF 2013 Toybox talk\". landley.net. Retrieved 21 August 2013. GPLv3 broke \"the\" GPL into incompatible forks that can't share code.|||^ \"The HESSLA's Problems - GNU Project - Free Software Foundation\". Retrieved 19 March 2015.|||^ \"GPLv3 - Transcript of Richard Stallman from the third international GPLv3 conference, Barcelona; 2006-06-22\". Retrieved 19 March 2015.|||^ \"Censorship envy and licensing — Free Software Foundation — Working together for free software\".|||^ \"Distinctive Features of SQLite\".|||^ \"A Peaceful Open Source License | Wise Earth Technology\".|||^ \"Non-military Use Only\".|||^ \"❌(REVERTED): Add text to MIT License banning ICE collaborators by jamiebuilds · Pull Request #1616 · lerna/Lerna\". GitHub.|||^ \"Evil, or why Douglas Crockford is harmful to Free Software\". 8 November 2012.|||^ \"JSMin isn't welcome on Google Code - wonko.com\". wonko.com. Retrieved 1 June 2024.|||^ \"Open source project adds \"no military use\" clause to the GPL\". 14 August 2006.|||^ \"Home\". commonsclause.com.|||^ \"The SSPL is Not an Open Source License | Open Source Initiative\". 19 January 2021.|||^ \"OpenBSD Copyright Policy\". the restriction that source code must be distributed or made available for all works that are derivatives […] As a consequence, software bound by the GPL terms cannot be included in the kernel or \"runtime\" of OpenBSD|||^ \"FreeBSD der unbekannte Riese\" (in German). 30 August 2023.|||^ \"terms of use\". Content that you submit must not directly compete with products offered by MathWorks. Content submitted to File Exchange may only be used with MathWorks products.|||^ \"File Exchange Licensing Transition FAQ\".|||^ \"Why can't I use code from File Exchange in Octave? It's released under a BSD license!\".|||^ \"Freedom or Power? by Bradley Kuhn and Richard Stallman\".|||^ \"Frequently Asked Questions about the GNU Licenses: Why don't you use the GPL for manuals?\". Retrieved 20 June 2009.|||^ Braakman, Richard. \"Re: Proposed statement wrt GNU FDL\". Debian-legal (Mailing list).|||^ Srivastava, Manoj (2006). \"Draft Debian Position Statement about the GNU Free Documentation License (nerGFDL)\". Retrieved 25 September 2007. It is not possible to borrow text from a GFDL'd manual and incorporate it in any free software program whatsoever. This is not a mere license incompatibility. It's not just that the GFDL is incompatible with this or that free software license: it's that it is fundamentally incompatible with any free software license whatsoever. So if you write a new program, and you have no commitments at all about what license you want to use, saving only that it be a free license, you cannot include GFDL'd text. The GNU FDL, as it stands today, does not meet the Debian Free Software Guidelines. There are significant problems with the license, as detailed above; and, as such, we cannot accept works licensed under the GNU FDL into our distribution.|||^ Nerode, Nathanael (24 September 2003). \"Why You Shouldn't Use the GNU FDL\". Archived from the original on 9 October 2003. Retrieved 7 November 2011.|||^ Bruce Perens (2 September 2003). \"stepping in between Debian and FSF\". lists.debian.org/debian-legal. Retrieved 20 March 2016. FSF, a Free Software organization, isn't being entirely true to the Free Software ethos while it is promoting a license that allows invariant sections to be applied to anything but the license text and attribution. FSF is not Creative Commons:the documentation that FSF handles is an essential component of FSF's Free Software, and should be treated as such. In that light, the GFDL isn't consistent with the ethos that FSF has promoted for 19 years.|||^ \"Resolution: Why the GNU Free Documentation License is not suitable for Debian\". Debian Project. February–March 2006. Retrieved 20 June 2009.|||^ FLOSS Manuals Foundation (6 June 2007). \"License Change\". FLOSS Manuals Blog. FLOSS Manuals Foundation. Archived from the original on 28 February 2008. Retrieved 20 June 2009.|||^ \"Transcript of Richard Stallman at the 3nd international GPLv3 conference\". Free Software Foundation Europe. 22 June 2006. Retrieved 23 July 2017.|||^ Sam Varghese (7 February 2012). \"GPL use in Debian on the rise: study\". Itwire.com. Retrieved 2 September 2013.|||^ \"Surveying open source licenses\". Lwn.net. Retrieved 2 September 2013.|||Referencesedit|||Rosen, Lawrence (22 July 2004). Open Source Licensing: Software Freedom and Intellectual Property Law. Prentice Hall. ISBN 978-0-13-148787-1.|||External linksedit|||Wikibooks has a book on the topic of: FOSS Licensing|||The Free Software Definition, by the Free Software Foundation.|||The Free Software Foundation's list of free and non-free licenses|||Debian's license information page|||Open Source Initiative's list of licenses|||Understanding Open Source and Free Software Licensing, by Andrew M. St. Laurent|||A 45-page licensing primer by Software Freedom Law Center|||show|||v|||t|||e|||Free and open-source software|||show|||v|||t|||e|||Intellectual property activism|||show|||v|||t|||e|||Software distribution|||Categories:|||Free and open-source software licenses|||Terms of service|||This page was last edited on 20 April 2025, at 15:34 (UTC).|||Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. 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AGPL terms will apply for the AGPL part in a combined work.25|||Website|||www.gnu.org/licenses/agpl.html|||The GNU Affero General Public License (GNU AGPL) is a free, copyleft license published by the Free Software Foundation in November 2007, and based on the GNU GPL version 3 and the Affero General Public License (non-GNU).|||It is intended for software designed to be run over a network, adding a provision requiring that the corresponding source code of modified versions of the software be prominently offered to all users who interact with the software over a network.6|||The Open Source Initiative approved the GNU AGPLv33 as an open source license in March 2008 after the company Funambol submitted it for consideration through its CEO Fabrizio Capobianco.7|||Historyedit|||In 2000, while developing an e-learning and e-service business model at Mandriva, Henry Poole met with Richard Stallman in Amsterdam and discussed the issue of the GPLv2 license not requiring Web application providers to share source code with the users interacting with their software over a network. Over the following months, Stallman and Poole discussed approaches to solve the problem. In 2001, Poole founded Affero Inc. (a web services business), and he needed a license that would require distribution by other organizations who used Affero code to create derivative web services. At that time, Poole contacted Bradley M. Kuhn and Eben Moglen of the Free Software Foundation to get advice on a new license that would resolve this matter in GPLv2.|||Around late February 2002, Kuhn suggested, based on the idea of a quine (a program that prints its own source code), that GPLv2 be supplemented with a section 2(d) that would require derivative works to maintain a \"download source\" feature that would provide complete and corresponding source code. Kuhn argued that there was precedent for such a requirement in GPLv2 section 2(c), which required preserving certain features by downstream distributors and modifiers.8|||Moglen and Kuhn wrote the text of the proposed new section 2(d), and provided it to Poole, who then requested and received permission from the FSF to publish a derivative of GPLv2 for this purpose. In March 2002, Affero, Inc. published the original Affero General Public License (AGPLv1) for use with the Affero project and made the new license available for use by other software-as-a-service developers.91011|||The FSF contemplated including the special provision of AGPLv1 into GPLv3 but ultimately decided to publish a separate license, nearly identical to GPLv3 but containing a provision similar in purpose and effect to section 2(d) of AGPLv1. The new license was named the GNU Affero General Public License. Retaining the Affero name indicated its close historic relationship with AGPLv1. The GNU AGPL was given version number 3 for parity with the GPL, and the current GNU Affero General Public License is often abbreviated AGPLv3.|||The finalized version of GNU AGPLv312 was published by the FSF on November 19, 2007.|||Compatibility with the GPLedit|||Both versions of the AGPL, like the corresponding versions of the GNU GPL on which they are based, are strong copyleft licenses. In the Free Software Foundation's judgment, the added requirement in section 2(d) of Affero GPL v1 made it incompatible with the otherwise nearly identical GPLv2. That is to say, one cannot distribute a single work formed by combining components covered by each license.|||By contrast, the GPLv3 and GNU AGPLv3 licenses include clauses (in section 13 of each license) that together achieve a form of mutual compatibility for the two licenses. These clauses explicitly allow the \"conveying\" of a work formed by linking code licensed under the one license against code licensed under the other license,13 despite the licenses otherwise not allowing relicensing under the terms of each other.2 In this way, the copyleft of each license is relaxed to allow distributing such combinations.2|||To establish an upgrade path from Affero's original AGPLv1 to the GNU AGPLv3, Affero, Inc. published the Affero General Public License version 2 in November 2007,14 which is merely a transitional license that allows recipients of software licensed under \"AGPLv1 or any later version as published by Affero, Inc.\" to distribute the software, or derivative works, under the GNU AGPLv3 or any later version.|||Examples of applications under GNU AGPLedit|||Main article: List of software under the GNU AGPL|||Stet was the first software system known to be released under the GNU AGPL, on November 21, 2007,8 and is the only known program to be used mainly for the production of its own license.|||Flask developer Armin Ronacher noted in 2013 that the GNU AGPL is a \"terrible success, especially among the startup community\" as a \"vehicle for dual commercial licensing\", and gave HumHub, MongoDB, Odoo, RethinkDB, Shinken, Slic3r, SugarCRM, and WURFL as examples.15|||MongoDB dropped the AGPL in late-2018 in favor of the \"Server Side Public License\" (SSPL), a modified version which requires those who offer the licensed software as a service accessible to third-parties, to make the entire source code of all software used to facilitate the service (including without limitation all \"management software, user interfaces, application program interfaces, automation software, monitoring software, backup software, storage software and hosting software, all such that a user could run an instance of the service using the Service Source Code you make available\") available under the same license.16 As approval for the SSPL by the Open Source Initiative was not forthcoming, the application for certification was withdrawn. It was banned by both Debian and the Fedora Project, who state that the license's intent is to discriminate against cloud computing providers offering services based on the software without purchasing its commercial license.[clarification needed]1718|||Software continues to be released under AGPLv3, various examples include many servers and clients for the fediverse such as Mastodon, Pixelfed and PeerTube, office suite software OnlyOffice, the RStudio IDE for the R programming language, system monitoring platform Grafana, the document/bibliography management system Zotero and more.|||Decentralized chat and collaboration software Element was relicensed from Apache 2.0 to both AGPLv3 and GPLv3, with a separate commercial license for Element Commercial.192021|||See alsoedit|||Free and open-source software portal|||List of software under the GNU AGPL|||Free-software license|||GNU General Public License|||GNU Lesser General Public License|||GNAT Modified General Public License|||GPL linking exception|||GNU Free Documentation License|||Comparison of free and open-source software licenses|||Referencesedit|||^ Jaspert, Joerg (November 28, 2008). \"ftp.debian.org: Is AGPLv3 DFSG-free?\". The Debian Project. Retrieved December 1, 2008.|||^ a b c d e \"Various Licenses and Comments about Them\". Free Software Foundation. 2020-05-07. Retrieved 2021-01-03. We recommend that developers consider using the GNU AGPL for any software which will commonly be run over a network.|||^ a b \"OSI approved licenses\". Open Source initiative. Archived from the original on 2021-10-23.|||^ \"OSI approved\", Licenses, TL;DR legal, archived from the original on 2021-11-28, retrieved 2016-02-17.|||^ a b \"Licenses section 13\", GNU AGPLv3, GNU Project.|||^ \"Why the Affero GPL\". The GNU Project. Archived from the original on 2021-10-23.|||^ \"Funambol Helps New AGPLv3 Open Source License Gain Formal OSI Approval\" (Press release). Funambol. Mar 13, 2008. Archived from the original on 2013-06-07.|||^ a b Kuhn, Bradley M. (November 21, 2007). \"stet and AGPLv3\". Software Freedom Law Center. Archived from the original on March 15, 2008. Retrieved June 14, 2008.|||^ \"Affero GPLv3: Why It Exists \u0026 Who It's For?\". ebb.org. Retrieved 2024-04-25.|||^ \"SCALE: The life and times of the AGPL [LWN.net]\". lwn.net. Retrieved 2024-04-25.|||^ \"Free Software Foundation Announces Support of the Affero General Public License, the First Copyleft License for Web Services\". Free Software Foundation. 2002-03-19. Retrieved 2021-01-03.|||^ \"License text of GNU AGPLv3\". Free Software Foundation (US). November 19, 2007. Archived from the original on 2007-12-04. Retrieved November 19, 2007.|||^ \"GNU General Public License\". Free Software Foundation. 2007-06-29. Retrieved 2021-01-03.|||^ \"Affero General Public License\". November 2007. Archived from the original on 2019-11-23. Retrieved 2021-01-03.|||^ Ronacher, Armin (2013-07-23). \"Licensing in a Post Copyright World\". lucumr.pocoo.org. Archived from the original on 2013-07-27. Retrieved 2015-11-18. The AGPLv3 was a terrible success, especially among the startup community that found the perfect base license to make dual licensing with a commercial license feasible. MongoDB, RethinkDB, OpenERP, SugarCRM as well as WURFL all now utilize the AGPLv3 as a vehicle for dual commercial licensing. The AGPLv3 makes that generally easy to accomplish as the original copyright author has the rights to make a commercial license possible but nobody who receives the sourcecode itself through the APLv3 inherits that right. I am not sure if that was the intended use of the license, but that's at least what it's definitely being used for now.|||^ \"Server Side Public License (SSPL)\". MongoDB. Archived from the original on 2021-10-23. Retrieved 2021-01-25.|||^ Vaughan-Nichols, Steven J. \"MongoDB \"open-source\" Server Side Public License rejected\". ZDNet. Archived from the original on 2021-10-23. Retrieved 2019-01-17.|||^ \"MongoDB's licensing changes led Red Hat to drop the database from the latest version of its server OS\". GeekWire. 2019-01-16. Archived from the original on 2021-10-23. Retrieved 2019-01-17.|||^ \"Element Copyright License - AGPL 3.0\". Github. Retrieved 20 January 2025.|||^ \"Element Copyright License - GPL 3.0\". Github. Retrieved 20 January 2025.|||^ \"Element Copyright License - Commercial License\". Github. Retrieved 20 January 2025.|||External linksedit|||Official website|||GNU Affero General Public License v3.0|||Smith, Brett (November 19, 2007). \"Free Software Foundation Releases GNU Affero General Public License Version 3\" (Press release).|||Smith, Brett (March 29, 2007), GPLv3 and Software as a Service – also includes info on version 2 of the Affero GPL.|||Kuhn, Bradley M. (March 19, 2002). \"Free Software Foundation Announces Support of the Affero General Public License, the First Copyleft License for Web Services\" (Press release).|||Internet Archive 2018 snapshot of AGPL Frequently Asked Questions Affero|||Internet Archive 2018 snapshot of AGPL text Affero|||show|||v|||t|||e|||GNU Project|||show|||v|||t|||e|||Free Software Foundation|||Categories:|||Free Software Foundation|||Free and open-source software licenses|||Computer law|||Copyleft software licenses|||GNU Project|||Copyleft|||This page was last edited on 7 April 2025, at 16:08 (UTC).|||Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization.", "bookmark_id": 10, "bookmark": { "id": 0, "created_at": "0001-01-01T00:00:00Z", "updated_at": "0001-01-01T00:00:00Z", "deleted_at": null, "url": "", "title": "", "notes": "", "domain": "", "favicon": "", "tags": null, "snapshots": null, "collection": null, "public": false, "unread": false, "user_id": 0 }, "size": 160497, "resources": null } ], "collection": null, "public": true, "unread": false, "user_id": 1 }, { "id": 1, "created_at": "2025-04-02T14:11:26.543150935Z", "updated_at": "2025-04-02T14:11:26.543150935Z", "deleted_at": null, "url": "https://en.wikipedia.org/wiki/Bookmark_(digital)", "title": "Bookmark (digital) - Wikipedia", "notes": "In the context of the World Wide Web, a bookmark is a Uniform Resource Identifier (URI) that is stored for later retrieval in any of various storage formats. ", "domain": "en.wikipedia.org", "favicon": "data:image/png;base64,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", "tags": [ { "id": 1, "created_at": "2025-04-02T14:11:26.52753391Z", "updated_at": "2025-04-02T14:11:26.52753391Z", "deleted_at": null, "text": "wikipedia", "bookmarks": null }, { "id": 2, "created_at": "2025-04-02T14:11:26.534648077Z", "updated_at": "2025-04-02T14:11:26.534648077Z", "deleted_at": null, "text": "bookmark", "bookmarks": null }, { "id": 3, "created_at": "2025-04-02T14:11:26.539272032Z", "updated_at": "2025-04-02T14:11:26.539272032Z", "deleted_at": null, "text": "definition", "bookmarks": null } ], "snapshots": [ { "id": 1, "created_at": "2025-04-02T14:11:26.573449815Z", "updated_at": "2025-04-02T14:11:27.725771842Z", "deleted_at": null, "title": "", "key": "4cd5cf6dbd9859795882c94200a3466b4c9032bb67b3f489a5218b83fbb479c4", "text": "Search|||Donate|||Create account|||Log in|||Contents hide|||(Top)|||Storage|||Bookmarklets|||Live bookmarks|||Bookmarks bar|||See also|||References|||External links|||Bookmark (digital)|||28 languages|||Tools|||Appearance hide|||Text|||Small|||Standard|||Large|||Width|||Standard|||Wide|||Color (beta)|||Automatic|||Light|||Dark|||From Wikipedia, the free encyclopedia|||\"Favorites\" redirects here. For other uses, see Favorites (disambiguation).|||Bookmarks in browsers are usually identified with a star icon and in many instances will use the icon image of the website to highlight the saved bookmark.|||In the context of the World Wide Web, a bookmark is a Uniform Resource Identifier (URI) that is stored for later retrieval in any of various storage formats. All modern web browsers include bookmark features. Bookmarks are called favorites or Internet shortcuts in Internet Explorer and Microsoft Edge, and by virtue of that browser's large market share, these terms have been synonymous with bookmark since the First Browser War.1 Bookmarks are normally accessed through a menu in the user's web browser, and folders are commonly used for organization. In addition to bookmarking methods within most browsers, many external applications offer bookmarks management.|||Bookmarks have been incorporated in browsers since the ViolaWWW browser in 1992,2 and Mosaic browser in 1993.3 Bookmark lists were called Hotlists in Mosaic4 and in previous versions of Opera; this term has faded from common use. Cello, another early browser, also had bookmarking features.|||With the advent of social bookmarking, shared bookmarks have become a means for users sharing similar interests to pool web resources, or to store their bookmarks in such a way that they are not tied to one specific computer or browser. Web-based bookmarking services let users save bookmarks on a remote web server, accessible from anywhere.|||Newer browsers have expanded the \"bookmark\" feature to include variations on the concept of saving links. Mozilla Firefox introduced live bookmarks in 2004,5 which resemble standard bookmarks but contain a list of links to recent articles supplied by a news site or weblog, which is regularly updated via RSS feeds; however, Mozilla removed this feature in 2018.6 \"Bookmarklets\" are JavaScript programs stored as bookmarks that can be clicked to perform a function.|||Storageedit|||The bookmarks sidebar in Mozilla Firefox 3.0. An alternative to the bookmarks menu, it is similar to sidebars found in Internet Explorer, Opera, and Safari.|||Each browser has a built-in tool for managing the list of bookmarks. The list storage method varies, depending on the browser, its version, and the operating system on which it runs.|||Netscape browsers store bookmarks in the single HTML-coded file bookmarks.html. This approach permits publication and printing of a categorized and indented catalog, and works across platforms. Bookmark names need not be unique. Editing this file outside its native browser requires editing HTML.|||For data portability and interoperability, most modern Web browsers support importing from and exporting to the Netscape bookmarks.html format.|||Beginning with Firefox 3, Mozilla Corporation began using SQLite in browser releases to store bookmarks, history, cookies, and preferences in a transactionally secure database.|||Internet Explorer's \"Favorites\" (also \"Internet Shortcuts\") are stored as individual files named with the original link name, and the filename extension \".URL\",7 for example \"Home Page.URL\" collected in a directory named \"Favorites\" which may have subdirectories. Bookmark names must be unique within a folder. Each file contains the original URL and Microsoft-specific metadata. Browsers have varying abilities to import and export bookmarks to favorites, and vice versa.8910|||Bookmarkletsedit|||Main article: Bookmarklet|||A bookmarklet in action|||Bookmarklets are JavaScript programs stored as bookmarks. The term is a portmanteau of the words bookmark and applet. Bookmarklets are possible because the JavaScript URI scheme allows JavaScript programs to be stored as URIs, which can be stored in bookmarks. Bookmarklets have access to the current page, which they may inspect and change. As such, they can be simple \"one-click\" tools which add functionality to the browser. Bookmarklets are typically installed by navigating to a web page that links to a JavaScript URI, right-clicking the link, and clicking the bookmark option.|||Web developer Steve Kangas got the idea from the Netscape JavaScript Guide,11 and coined the term bookmarklets in 1998.12 Brendan Eich, the inventor of JavaScript, explained bookmarklets as follows:|||They were a deliberate feature in this sense: I invented the javascript: URL along with JavaScript in 1995, and intended that javascript: URLs could be used as any other kind of URL, including being bookmark-able. In particular, I made it possible to generate a new document by loading, e.g. javascript:'hello, world', but also (key for bookmarklets) to run arbitrary script against the DOM of the current document, e.g. javascript:alert(document.links[0].href). The difference is that the latter kind of URL uses an expression that evaluates to the undefined type in JS. I added the void operator to JS before Netscape 2 shipped to make it easy to discard any non-undefined value in a javascript: URL.|||— Brendan Eich, email to Simon Willison13|||Live bookmarksedit|||Live bookmarks are Internet bookmarks powered by RSS, particularly in Mozilla Firefox. They allow users to dynamically monitor changes to their favorite news sources. Instead of treating RSS-feeds as HTML pages like most news aggregators do, they are treated as bookmarks that are updated in real-time with a link to the appropriate source. Live bookmarks are updated automatically; however, no browser option exists to prevent or control the automatic live bookmark updates.|||Live bookmarks were available in Firefox from 2004 until December 2018; since then, Firefox no longer supports them.6|||Bookmarks baredit|||The Bookmarks bar, also known as the Favorites bar in Microsoft Edge and Internet Explorer, is a graphical user interface (GUI) element in modern web browsers that provides quick access to frequently visited or saved websites. Positioned directly beneath the address bar by default, it allows users to store, organize, and retrieve bookmarks with minimal effort.14|||See alsoedit|||Deep linking|||Favicon|||Smart keyword|||XBEL|||Table of content|||Bookmarking systems|||Bookmark manager|||Enterprise bookmarking|||Comparison of enterprise bookmarking platforms|||Social bookmarking|||List of social bookmarking websites|||Other weblink-based systems|||Search engine|||Comparison of search engines with social bookmarking systems|||Web directory|||Lists of websites|||Referencesedit|||^ Shannon, L. R. (February 21, 1999). \"Travel Advisory: Cyberscout; Getting to Your Destination Without Drowning in Data\". The New York Times. Retrieved July 3, 2009.|||^ Berners-Lee, Tim (November 3, 1992). \"A quick look at ViolaWWW\". Retrieved March 29, 2022.|||^ \"New X-based information systems browser available.\", post to comp.infosystems by Marc Andreessen on February 16, 1993|||^ \"May World-Wide Web News\" in 1993 by Tim Berners-Lee|||^ \"Mozilla Foundation Releases the Highly Anticipated Mozilla Firefox 1.0 Web Browser\", press release on November 9, 2004|||^ a b \"Firefox 64.0, See All New Features, Updates and Fixes\". Mozilla. December 11, 2018. Retrieved December 12, 2018.|||^ \"Working with Shortcuts\". Microsoft Windows 2000 Scripting Guide. Microsoft. 22 October 2009. Retrieved June 19, 2015.|||^ \"Netscape Bookmark File Format\" (Web). Microsoft. Retrieved August 27, 2009.|||^ \"How to import and export the Internet Explorer Favorites folder to a 32-bit version of Windows\" (Web). Microsoft. Retrieved August 28, 2009.|||^ Mikkers, Jean-Paul (19 December 2007). \"How favorites are stored on Windows XP and Vista\" (Web). Codeproject. Retrieved August 28, 2009.|||^ \"About Bookmarklets\". Retrieved July 3, 2009.|||^ \"Bookmarklets Home Page — free tools for power surfing\". Archived from the original on July 7, 2009. Retrieved July 3, 2009.|||^ Willison, Simon (April 10, 2004). \"Email from Brendan Eich\". SitePoint. Archived from the original on 2009-07-21. Retrieved 2007-04-22.|||^ Shannon, L. R. (February 21, 1999). \"Travel Advisory: Cyberscout; Getting to Your Destination Without Drowning in Data\". The New York Times. Retrieved July 3, 2009.|||External linksedit|||show|||v|||t|||e|||Web browsers|||Authority control databases: National|||Czech Republic|||Categories:|||Web browsers|||Internet terminology|||Online bookmarking services|||This page was last edited on 1 April 2025, at 06:42 (UTC).|||Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization.", "bookmark_id": 1, "bookmark": { "id": 0, "created_at": "0001-01-01T00:00:00Z", "updated_at": "0001-01-01T00:00:00Z", "deleted_at": null, "url": "", "title": "", "notes": "", "domain": "", "favicon": "", "tags": null, "snapshots": null, "collection": null, "public": false, "unread": false, "user_id": 0 }, "size": 319278, "resources": null } ], "collection": null, "public": true, "unread": false, "user_id": 1 } ], "FrequentTags": [ { "Tag": "wikipedia", "Count": 6 }, { "Tag": "free software", "Count": 5 }, { "Tag": "license", "Count": 4 }, { "Tag": "activitypub", "Count": 3 }, { "Tag": "IT", "Count": 2 }, { "Tag": "bookmark", "Count": 2 }, { "Tag": "documentation", "Count": 2 }, { "Tag": "golang", "Count": 2 }, { "Tag": "news", "Count": 2 }, { "Tag": "programming", "Count": 2 }, { "Tag": "definition", "Count": 1 }, { "Tag": "fediverse", "Count": 1 }, { "Tag": "feed", "Count": 1 }, { "Tag": "foundation", "Count": 1 }, { "Tag": "fsf", "Count": 1 }, { "Tag": "github", "Count": 1 }, { "Tag": "json", "Count": 1 }, { "Tag": "mastodon", "Count": 1 }, { "Tag": "omnom", "Count": 1 }, { "Tag": "scraping", "Count": 1 } ], "HasNextPage": false, "HasSearch": true, "OrderBy": "", "Page": "bookmarks", "Pageno": 1, "SearchParams": { "Q": "", "Owner": "", "FromDate": "", "ToDate": "", "Tag": "wikipedia", "Domain": "", "Collection": "", "IsPublic": false, "IsPrivate": false, "SearchInSnapshot": false, "SearchInNote": false }, "URL": "https://omnom.zone/bookmarks?format=json\u0026tag=wikipedia", "User": null }