Creative Commons-licensed websites

Wikipedia is a free online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki. Founded by Jimmy Wales and Larry Sanger in 2001, Wikipedia has been hosted since 2003 by the Wikimedia Foundation, an American nonprofit organization funded mainly by donations from readers. Wikipedia is the largest and most-read reference work in history. According to Jimmy Wales, its mission is to make the sum of all human knowledge available to every person in the world.

Wikidata is a collaboratively edited multilingual knowledge graph hosted by the Wikimedia Foundation. It is a source of open data released under the Creative Commons CC0 public domain dedication. It is for the use of both Wikimedia and external projects. Wikidata is a wiki powered by the software MediaWiki, including its extension for semi-structured data, the Wikibase. As of early 2025, Wikidata had 1.65 billion item statements (semantic triples).

Wikinews is a free-content news wiki and a project of the Wikimedia Foundation that gathers and reports news collaboratively through user-created content. Wikipedia co-founder Jimmy Wales has distinguished Wikinews from Wikipedia by saying, "On Wikinews, each story is to be written as a news story as opposed to an encyclopedia article."

Wikispecies is a wiki-based online project supported by the Wikimedia Foundation. Its aim is to create a comprehensive open content catalog of all species; the project is directed at scientists, rather than at the general public. Jimmy Wales stated that editors are not required to fax in their degrees, but that submissions will have to pass muster with a technical audience. Wikispecies is available under the GNU Free Documentation License and CC BY-SA 4.0.

Wikiversity is a Wikimedia Foundation project that supports learning communities, their learning materials, and resulting activities. It differs from Wikipedia in that it offers tutorials and other materials for the fostering of learning, rather than an encyclopedia. It is available in many languages.

Wikivoyage is a free web-based travel guide for travel destinations and travel topics written by volunteer authors. It is a sister project of Wikipedia and supported and hosted by the same non-profit Wikimedia Foundation (WMF). Wikivoyage has been called the "Wikipedia of travel guides".

programming language learning environment

Wikitravel is a web-based collaborative travel guide based on the wiki format and owned by Internet Brands. It was most active from 2003 through 2012, when most of its editing community left and brought their contributions to the nonprofit Wikivoyage guide.

thumb|A short introduction to Wikifunctions by Denny Vrandečić

encyclopedia on the history of Switzerland

web-based collaborative fiction writing project

WikiTribune (stylized as WikiTRIBUNE) was a news wiki where volunteers wrote and curated articles about widely publicised news by proof-reading, fact-checking, suggesting possible changes, and adding sources from other, usually long established outlets. Jimmy Wales, co-founder of Wikipedia, announced the site in April 2017 as a for-profit site, not affiliated with Wikipedia or its support organisation, the Wikimedia Foundation. Until October 2018, WikiTribune employed journalists with established backgrounds in the profession who researched, syndicated, and reported news. Its website is now a

Tatoeba is a free collection of example sentences with translations geared towards foreign language learners. It is available in more than 400 languages. Its name comes from the Japanese phrase , meaning 'for example'. It is written and maintained by a community of volunteers through a model of open collaboration. Individual contributors are known as "Tatoebans". It is run by Association Tatoeba, a French non-profit organization funded through donations.

Forvo.com ( ) is a website that allows access to, and playback of, pronunciation sound clips in many different languages to facilitate language learning. Forvo.com was first envisioned in 2007 by co-founder Israel Rondón, and came to fruition in 2008. Forvo.com is owned by Forvo Media SL, based in San Sebastián, Spain. It claims on its "about" page to be the largest pronunciation guide website on the Internet. It has been listed among the 50 best websites of 2013 by Time.

EcuRed is a Cuban online encyclopedia built on MediaWiki software. The site was launched on 13 December 2010. The name is an acronym from the Spanish phrase '''' (literally "Cuban Encyclopedia on the Network").

astronomical database

online wiki listing and analyzing conventions (tropes) found in fictional works

Iranian news agency

Iranian news agency

Mapillary is a service for open-source sharing of crowdsourced geotagged photos, including 360° photos and street-level imagery similar to Google Street View. It is developed by remote company Mapillary AB, based in Malmö, Sweden. Mapillary was launched in 2013 and acquired by Meta Platforms, Inc. in 2020.

Jamendo is a Luxembourg-based music website and an open community of independent artists and music lovers. A subsidiary of Belgian company Winamp Group, and Independent Management Entity (IME) since 2019.

cross-browser documentation center on web technologies

network of question and answer websites

Openclipart, originally founded as Open Clip Art Project, then The Open Clip Art Library, is an online media repository of free-content vector clip art. The project hosts over 182,641 free graphics made by and shared by over 8,185 artists.

Iranian News Agency

database of language structures

iFixit ( ) is an American e-commerce and how-to website that publishes free wiki-like online repair guides and tear-downs of consumer electronics and gadgets. It also sells repair parts, tools, and accessories. It is a private company in San Luis Obispo, California, founded in 2003, spurred by Kyle Wiens not being able to locate an Apple iBook G3 repair manual while the company's founders were attending Cal Poly San Luis Obispo.

open wiki to catalog food, nutrition facts and ingredients

campaign by the Free Software Foundation opposing digital rights management

news organization that publishes news articles written by academics

free online encyclopedia about Zambia

MicroWiki is a free online encyclopedia about micronations launched in 2005. It has since become the principal way in which Internet users document micronational matters, as most do not meet Wikipedia's notability requirements. It is maintained by volunteers using the same MediaWiki software as Wikipedia. MicroWiki describes itself as "the largest encyclopedia about micronations".

Kremlin.ru is the official website of the President of the Russian Federation. It was launched in January 2000. Website content is licensed under a Creative Commons Attribution 4.0 International license.

Brazilian public news agency

Liberapay is a non-profit platform for recurrent donations. It is maintained by a non-profit organization of the same name, registered in Querrien, France in 2015.

daily newspaper in Lebanon

Open Game Art is a media repository intended for use with free and open source software video game projects, offering open content assets.

JurisPedia () was a wiki-based online encyclopedia of academic law in many languages, at one time available in Arabic, Chinese, English, French, German, Spanish and Dutch. It was started in October 2004, inspired in part by Wikipedia and the Enciclopedia Libre (University of Seville). JurisPedia ran on the MediaWiki software, but it was not a Wikimedia Foundation project.

Groklaw was a website that covered legal news of interest to the free and open source software community. Started as a law blog on May 16, 2003, by paralegal Pamela Jones ("PJ"), it covered issues such as the SCO-Linux lawsuits, the EU antitrust case against Microsoft, and the standardization of Office Open XML.

LocalWiki is a collaborative project that aims to collect and open the world's local knowledge. The LocalWiki project was founded by DavisWiki creators Mike Ivanov and Philip Neustrom and is a 501(c)(3) nonprofit organization based in San Francisco, California. LocalWiki is both the name of the project and the software that runs the project's websites.

community project to analyze and grade the terms of service (TOS) and privacy policies of Internet sites and services

website

Iranian news agency

freely accessible online community for geographically located photographs of Great Britain and Ireland

web-based publication of 42 Yale OYC course content

Fortepan is a community photo archive based in Budapest, Hungary, established in 2010. Today the archive contains thousands of digitized high-resolution archival photos that capture everyday twentieth-century life in Hungary. Fortepan photos are organized along an interactive timeline and are publicly available for anyone to search, tag, download, and use.

digital library of audio recordings in endangered languages

Truthout is an American non-profit news organization which describes itself as "dedicated to providing independent reporting and commentary on a diverse range of social justice issues." Truthout reports news from a left-wing perspective, with its main areas of focus including mass incarceration, prison abolition advocacy, social justice, climate change, militarism, economics, open borders, U.S. LGBTQ+ rights, and reproductive justice.

American leftist national publication