Wikimedia Foundation’s cover photo
Wikimedia Foundation

Wikimedia Foundation

Software Development

San Francisco, CA 109,975 followers

Imagine a world in which every single human being can freely share in the sum of all knowledge.

About us

We are the nonprofit organization that operates Wikipedia and the other Wikimedia free knowledge projects. We host a technology infrastructure that makes possible billions of monthly visits to Wikipedia. Since 2003, we have supported the hundreds of thousands of volunteer editors who edit, expand, and curate the Wikimedia projects. We equip these volunteers with the most up-to-date tools, ensure connections to Wikipedia are fast, safe, and private, and develop new technology and products to meet the demands of our readers and editors. We provide individuals and organizations around the world with funding to increase the knowledge on Wikipedia. We also undertake legal and advocacy efforts to protect people’s right to free knowledge. We are a charitable, not-for-profit organization that relies on donations. We receive donations from millions of individuals around the world, with an average donation of about $11. We also receive donations through institutional grants and gifts. We are a United States 501(c)(3) tax-exempt organization with offices in San Francisco, California.

Website
https://wikimediafoundation.org
Industry
Software Development
Company size
501-1,000 employees
Headquarters
San Francisco, CA
Type
Nonprofit
Founded
2003
Specialties
Non-Profit, Free knowledge, Internet, Technology, Mobile, Open Source, Education, and Wikipedia

Locations

Employees at Wikimedia Foundation

Updates

  • The Wikimedia Foundation is the nonprofit powering one of the world's most visited websites by providing the infrastructure, legal support, and resources that keep knowledge free and accessible to everyone. Our staff work across technology, partnerships, policy, communications, and more to support a global movement of editors and contributors who help expand what the world knows. The community sets the direction of each project. Our role is to amplify and sustain them. Learn who we are ➡️ https://lnkd.in/dNnDaTF5

    • Simple line drawing of five diverse people grouped together with arms around each other. Text reads: The community runs Wikipedia. The Wikimedia Foundation helps them with the technical infrastructure, legal protection, and growing pains.
  • On 14 May 2004, Wikipedia featured its first "Picture of the Day". The image showed the Virgin River Narrows in Zion National Park (US). At the time, Wikipedia was still largely text-focused. Adding a featured image to the main page was part of a broader shift toward making knowledge not just readable, but also visual. Since then, "Picture of the Day" has become a regular feature, highlighting images from Wikimedia Commons that are freely licensed and widely reusable. Check out the Picture of the Day archive ➡️ https://w.wiki/8KrC #Wikipedia25

    • Landscape photograph with puzzle-piece overlay and text noting that Wikipedia was not always this visual.
    • Screenshot of a Wikipedia page highlighting the Picture of the Day archive dating back to 2004.
  • Wikimedia Foundation reposted this

    📢 The Digital Public Goods Alliance is excited to welcome the Wikimedia Foundation as its newest member! After Wikipedia and Wikidata were officially recognised as digital public goods in 2025, the Wikimedia Foundation now joins the DPGA to help strengthen and advance the global DPG ecosystem. Through its membership, the organisation will support investments in Wikimedia Cloud Services and continue advocating for open knowledge infrastructure, open-source first approaches, public interest AI, information integrity, and inclusive digital participation worldwide. 🎉 As Wikipedia approaches its 25th anniversary, this milestone further reinforces the importance of protecting and sustaining community led DPGs that serve the public interest. 🔗 Learn more in our recent blog and explore the roadmap: https://lnkd.in/dPV36-uT

    • No alternative text description for this image
  • The Wikimedia Foundation is celebrating a new milestone in its mission to champion open knowledge 🎉 The nonprofit organization joined the Digital Public Goods Alliance (DPGA), an initiative endorsed by the United Nations that promotes the discovery, development, and use of digital public goods (DPGs) such as open-source software, dataset, AI models, and content. As Wikipedia celebrates its 25th birthday, the membership reaffirms the Wikimedia Foundation’s commitment to open knowledge as a public good, ensuring it remains accessible, rights-based, and governed in the public interest. In 2025, Wikipedia and Wikidata, two Wikimedia projects, were officially recognized as digital public goods by the DPGA. The acknowledgment showcased the important role that volunteers play in building a better internet that serves the public interest. Learn more about the DPGA and the Foundation’s commitment ➡️ https://lnkd.in/dBXCWGNi

    • A picture depicting the Baroque Library Hall located in the Celementinum complex in Prague, Czechia. Text reads: Wikimedia Foundation joins the Digital Public Goods Alliance.
  • Over the past decade, University of California, Berkeley professor Juana María Rodríguez has led a project with her students to expand LGBTQ+ representation on Wikipedia through a partnership with Wiki Education, focusing on queer history. Along the way, students have edited hundreds of articles, created dozens more, and contributed work that has reached tens of millions of readers. Each article follows Wikipedia’s standards: neutral tone, verifiable sources, and clear citations. Students compile annotated bibliographies and rely on high-quality research to support their contributions. See how the record is being rewritten ➡️ https://lnkd.in/e74snfRA

    • Portrait of a woman speaking and gesturing, featured alongside the headline “How a teacher and her students are bringing queer equality to Wikipedia".
  • Wikipedia is made possible thanks to a global community of volunteers: editors, photographers, translators, developers, organizers, donors, and more. They contribute in over 300 languages, across every time zone, on every subject humans have thought to write about. The Wikimedia Foundation exists to support that community: to keep the infrastructure running, to protect the mission, and to make sure the knowledge those volunteers build stays free and accessible to every person on Earth. Meet our community ➡️ https://lnkd.in/gmyk-qDE

  • Transparency is a cornerstone of the Wikimedia movement. While the volunteer editors handle the majority of content moderation requests, twice a year, the Wikimedia Foundation publishes a Transparency Report documenting the requests we receive to alter or remove content from our projects. The report features charts and graphs showing where requests came from and which projects were targeted, along with selected case stories and an FAQ that adds helpful context. Together, these efforts aim to clarify the nature of these requests and how the Foundation handles them. We hope this report deepens understanding of threats to free knowledge and the work being done to protect it. Read the July-December 2025 report ➡️ https://lnkd.in/dRxaxg72

    • The picture has a soft green background. Text reads: Imagine a world in which every single human being can freely share in the sum of all knowledge. Wikimedia Foundation Transparency Report. July to December 2025.
  • "Free" on the internet means more than you might think. On Wikimedia projects, free content goes beyond price. It means content that anyone can use, share, and even modify, as long as they follow defined terms. This usually involves licenses like Creative Commons, which allow reuse with conditions such as giving credit to the original creator or sharing new versions under the same terms. Learn how "free" actually works ➡️ https://w.wiki/3rhJ

    • Graphic with the message “Free content is about more than cost. It’s about what you can build.”

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Funding

Wikimedia Foundation 17 total rounds

Last Round

Grant

US$ 2.1M

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