Overview
The Wikimedia Foundation is a nonprofit charitable organization that supports a global collection of free knowledge projects. Headquartered in a campus in San Francisco, United States, the Foundation provides the legal, technical and financial infrastructure that enables volunteers to create and maintain openly licensed content. Its work centers on enabling community-driven contribution, making content accessible without paywalls, and improving the software and policies that keep the projects running.
Core projects and related wikis
The Foundation hosts a family of projects built on the wiki concept and the MediaWiki platform, each designed for different kinds of content or collaboration. Core projects include:
- Wikipedia — multilingual encyclopedias
- Wikimedia Commons — a repository of freely licensed media
- Wikidata — a structured database of facts
- Wiktionary, Wikiquote, Wikisource — dictionaries, quotations and source texts
- Wikibooks, Wikiversity — educational texts and learning communities
- Wikinews, Wikivoyage — news and travel guides
- Meta-Wiki — coordination and policy documentation across projects
In addition to these, the Foundation supports smaller or technical wikis such as the Foundation's own community wiki, the Bugzilla instance for issue tracking, the Wikimania event wiki, the MediaWiki project wiki and incubation spaces for new language projects.
History and governance
The Wikimedia Foundation was announced by co-founder Jimmy Wales on June 20, 2003 to provide a nonprofit home for Wikipedia after its early years under a private company. It is governed by a board of trustees drawn from the volunteer and philanthropic communities and operates with a professional staff that runs day-to-day functions. Over time the Foundation has had several notable leaders and board chairs; past executives include Sue Gardner and Katherine Maher, while volunteers and elected board members such as community chairs have shaped policy and priorities.
Funding, operations and partnerships
As a nonprofit, the Foundation relies primarily on donations from individuals and institutional grants rather than advertising revenue. It also receives in-kind support from technology partners that have donated hardware, hosting and other services (examples of corporate support). Fundraising drives, grants and philanthropic gifts finance servers, development of the MediaWiki software, community programs, legal defense, accessibility work and a growing professional staff.
Role, impact and distinctions
Wikimedia projects are notable for their global volunteer model, open licences, and scale: they combine millions of articles and media files in hundreds of languages. The Foundation focuses on enabling volunteer communities rather than controlling editorial content; most content decisions are made by contributors following project policies. Wikimedia has also invested in research, free knowledge advocacy, and community programs to increase participation and reduce systemic gaps in coverage.
Further notes
The Foundation continues to evolve its governance, technical roadmap and public programs while balancing openness with the practical needs of running a global web platform. For more information about specific projects, policies and technical details, readers can consult project homepages and coordination pages linked throughout this article or visit the Foundation's community portals.
About the wiki idea • Origins at Bomis • Headquarters • City • Country