Wikimedia Foundation

Wikimedia Foundation

Software Development

San Francisco, CA 79,763 followers

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

About us

About the Wikimedia Foundation The Wikimedia Foundation is the nonprofit organization that operates Wikipedia and the other Wikimedia free knowledge projects. Our vision is a world in which every single human can freely share in the sum of all knowledge. We believe that everyone has the potential to contribute something to our shared knowledge, and that everyone should be able to access that knowledge freely. We host Wikipedia and the Wikimedia projects, build software experiences for reading, contributing, and sharing Wikimedia content, support the volunteer communities and partners who make Wikimedia possible, and advocate for policies that enable Wikimedia and free knowledge to thrive. The Wikimedia Foundation is 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 $15. We also receive donations through institutional grants and gifts. The Wikimedia Foundation is a United States 501(c)(3) tax-exempt organization with offices in San Francisco, California, USA.

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, Open Source Culture, Internet, Technology, Mobile, Open Source, Education, Free Knowledge , and Wikipedia

Locations

Employees at Wikimedia Foundation

Updates

  • Meet the latest winners of Wiki Loves Earth! Volunteer-led and organized, Wiki Loves Earth encourages photographers to take pictures of local natural heritage in their country and share them with the world on Wikimedia Commons.⁠ This year, Wiki Loves Earth received more than 80,000 submissions from over 3,800 participants in 56 countries — the highest number of countries ever in the contest’s history. Swipe through to get inspired by the winners of the “landscapes” category ➡️ https://lnkd.in/dwZ9MVaN

  • From a single research assignment to over 27,000 edits across Wikimedia projects: Today, we #WikiCelebrate Chabota Isaac Kanguya, a passionate contributor from Zambia. Chabota started contributing to Wikimedia in 2011. But enthusiasm alone wasn’t enough. Early attempts to upload content were quickly deleted due to a lack of what Wikipedians value deeply – verified sources. This could be the end of his Wikimedia journey, but Chabota persevered. He spent four years carefully studying the values of Wikimedia projects, with neutrality, verifiability, and free knowledge for all shaping the guidelines, policies, and best practices that govern Wikipedia and its sister projects. Now, he is a contributor with thousands of edits across Wikimedia projects, including 11,000 edits in English Wikipedia and over 2,400 edits in Chewa Wikipedia. Celebrate with us Chabota’s inspiring work and see how he is making a difference for free knowledge ➡️ https://w.wiki/CEhA

    • WikiCelebrate Chabota Isaac Kanguya.
  • Wikipedia rabbit holes: we have all been there. You start with something simple like a movie you watched recently and suddenly, two hours later, you are reading about quantum physics or the history of salt. According to researchers at the University of Pennsylvania, in the United States, there is a logic behind where you end up on Wikipedia. A recent study shows three main types of Wikipedia readers, each guided by their own "knowledge network" and style of curiosity. The three types identified in the study are the busybody, the hunter, and the dancer. The first moves steadily through related topics; the second follows specific paths to reach a goal; and the third jumps between topics to explore their unusual connections. "The busybody scouts for loose threads of novelty, the hunter pursues specific answers in a projectile path, and the dancer leaps in creative breaks with tradition across typically siloed areas of knowledge", the researchers explained. Do you think any of these types apply to you? Want to know more? Check out the article ➡️ https://lnkd.in/eXcUVY_s

    • A contemporary spiral staircase spirals down in a concrete building. Text says: Scientists at the University of Pennsylvania  have mapped out three distinctly different ways of going down the Wikipedia rabbit hole. Which type are you?
    • A monkey perched on a ledge. Text says: Busybody. These users explore related topics that spark their interest, creating a steady flow between connected articles. Their curiosity focuses on weaving a thread through similar subjects, such as moving from “Impressionism” to “Art movement” and then to ”Claude Monet”.
    • A man peering through the scope. Text says: Hunter. Goal-oriented users who follow a clear path to find specific answers. They start with a purpose and click only on articles directly related to their search, like jumping from “Biological process” to “Photosynthesis” and then to “Chlorophyll”.
    • A woman ballet dancer gracefully poses in a vibrant red dress and white tights. Text says: Dancer. Creative and unpredictable, these users leap between unrelated topics, following curiosity wherever it leads. They might start on “Volcano”, hop to “Livestock” and end up at “Quarantine”.
  • Imagine if you could use the programming work of others to solve problems, translate text, or answer complex questions — all without needing to know how to code. Wikifunctions makes this possible by creating a global library of reusable tools, called functions, that anyone can use and improve. Wikifunctions is the latest Wikimedia project, designed to take programming collaboration and innovation to the next level. It connects people from around the world to build, test, and use functions in a variety of programming languages. The results are available to anyone for free. This fosters innovation and makes coding accessible for everyone, even non-programmers. Wikifunctions is about making knowledge more accessible and usable. Whether you are curious about how things work or want to use these tools, Wikifunctions makes it easy to explore and contribute. If you know nothing about tech, learn more about the basics at the Wikifunctions FAQ. If you are already familiar, visit the FAQ to get to know the project. Learn how to understand all the complexities and contribute ➡️ https://w.wiki/AfqC

  • Every year on 1 January, Public Domain Day celebrates the artistic works that enter the public domain, becoming free for everyone to use, share, and adapt. Wikimedia volunteers are at the forefront of preserving and sharing these works while carefully navigating copyright restrictions. Copyright terms vary widely across the globe, shaping how and when works become accessible. 2025, for example, sees two world-famous painters stand out: Mexican surrealist Frida Kahlo and French fauvist Henri Matisse. While much of Kahlo’s work is entering the public domain in many countries, Mexico’s 100-year copyright protection means it cannot yet be freely used on Wikimedia projects. Meanwhile, works by Matisse are more definitively entering the public domain, opening up opportunities to expand free knowledge. Discover more about how the Wikimedia movement makes these cultural treasures available for all ➡️ https://w.wiki/CbAe

    • "La danse (second version)", painting by Henri Matisse. Text says: It's Public Domain Day! Every year on 1 January, the Wikimedia community celebrates the day on which artistic works become free to use once their copyright protection ends.
  • We are thrilled to share the 2023 Wikimedia Commons Picture of the Year! This stunning image, captured by Trantuanviet, was chosen as part of Wikimedia Commons’ annual photo competition, which celebrates the beauty and diversity of free media contributed by our global community to Commons – a free media repository where users can share and access images, videos, and other multimedia files. Participation is open to any Wikimedia project user with at least 75 edits whose account was registered before or during the year the contest is being held. Winners are voted on by the community, with the same eligibility requirements for voting as for participating. The competition is held to select a single photo of the year for Wikimedia Commons, but there are a number of runner-ups and category winners as well. Here is the description of the winning photo for 2023: “Incense plays an important role in Vietnamese life. It is considered as a sacred bridge to connect the visible life of human beings and the world of heaven, earth, and gods. Photo taken in Quang Phu Cau village, on the outskirts of Hanoi, Vietnam. In this picture, incense sticks are being set out to dry, after being dipped in the incense solution.” This is the 18th edition of the Picture of the Year contest. You can see all the results here ➡️ https://w.wiki/_rGG2

    • 2023 Picture of the year winner: Trantuanviet. In Hanoi, Vietnam, incense is considered a sacred bridge between humans and gods. Picture depicts a man seated in a lush field of rose-colored incense sticks as they are set out to dry.
  • From a single contribution made nearly 20 years ago to becoming one of the most respected Wikimedians in the Central Eastern European region, Mārtiņš Bruņenieks (User:Papuass) has taken on many roles within the Wikimedia movement. He has been an administrator on Latvian Wikipedia; the author of more than 3,000 Wikipedia articles; a regional connector between different contributors; a passionate campaign organizer; translator; and more. This month, we #WikiCelebrate Mārtiņš's journey and contributions ➡️ https://w.wiki/CEgo

    • “I discovered that one of the best feelings is to observe new images being uploaded every day in [photo] campaigns.” Quote by Mārtiņš Bruņenieks, Wikimedia contributor.
  • Wikipedia is only one of 14 different free knowledge projects hosted by the Wikimedia Foundation. Discover a universe of projects that make knowledge available for everyone, everywhere in only a #AWikiMinute

    View organization page for Wikimedia Foundation, graphic

    79,763 followers

    Hello 👋🏾 We are the Wikimedia Foundation, the non-profit organization behind Wikipedia and 12 other free knowledge projects. We believe that knowledge is a human right. Our incredible team works to make sure free knowledge is accessible to everyone around the world. You are invited to learn more about us in just #AWikiMinute. Watch ▶️

  • A majestic deer emerging from a mist-shrouded forest. An Eurasian hoopoe preparing to feed its hungry offspring with a recently captured bug. Newly hatched yellow-winged darters drying out on a twig. The winners of this year’s Wiki Loves Earth photo contest remind us of our planet's timeless beauty and its fragility. The annual international photo competition encourages photographers to take pictures of local natural heritage in their country and share them with the world on Wikimedia Commons.⁠ Wiki Loves Earth’s winners fell into two categories: a “macro/close-up” category (including animals, plants, fungi, featured in this post) and a “landscapes” category for wider shots. Swipe through to get inspired. Learn more ➡️ https://lnkd.in/dwZ9MVaN

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Funding

Wikimedia Foundation 17 total rounds

Last Round

Grant

US$ 2.1M

See more info on crunchbase