Imagine a world in which every single human being can freely share in the sum of all knowledge.
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Imagine a world in which every single human being can freely share in the sum of all knowledge.
Stell dir eine Welt vor, in der jeder einzelne Mensch frei an der Summe allen Wissens teilhaben kann.
The non-profit Wikimedia Foundation provides the essential infrastructure for free knowledge. We host Wikipedia, the free online encyclopedia, created and edited by volunteers around the world, as well as many other vital community projects. We welcome anyone who shares our vision to join us in collecting and sharing knowledge that fully represents human diversity.
Research
We conduct our own research and partner with researchers worldwide to address change in society and technology.
More about research
Technology
From site reliability to machine learning, our open-source technology makes Wikipedia faster, more reliable, and more accessible worldwide.
More about technology
Advocacy
We fight to protect everyone’s right to access free and open knowledge.
More about advocacy
Projects —
Collaborative projects are the core of the Wikimedia movement.
Our volunteers build tools, share photos, write articles, and are working to connect all the knowledge that exists.
See all projects
Wikipedia
Free encyclopedia written in 300 languages by volunteers around the world.
Wikimedia Commons
The world's largest free-to-use library of illustrations, photos, drawings, videos and music.
PARTICIPATE — Profiles
Wikimedians are heroes of free knowledge.
May Hachem
Editor since 2013, Wikimedia community
Arminé Aghayan
Editor since 2013, Wikimedia community
Christine Meyer
Editor since 2007, Wikimedia community
Throughout history, knowledge has been controlled by a powerful few. Wikipedia needs knowledge from all languages and cultures. The internet has become the default for accessing information—women, people of color, and the global south remain underrepresented. We invite you to help correct history.
Join the movement
200,000+
editors contribute to the Wikimedia projects every month
KEY INFORMATION —
Things to know
Wikimedia projects belong to everyone
You made it. It is yours to use. All text on Wikimedia sites is available as Creative Commons material. That means you can use it, re-write it, or share it. Just do not write your own bio, or copy/paste it in your homework.
Your data belongs to you
We do not sell your email address or any of your personal information with third parties. More information about our privacy practices are available at the Wikimedia Foundation privacy policy, donor privacy policy, and requests for user information procedures and guidelines.
People like you keep Wikipedia accurate
Wikipedia articles are collaboratively created and edited by a community of volunteers using reliable sources. Readers verify the facts. No single person or company owns a Wikipedia article. We cannot change a Wikipedia article about you, but others can help.
Not all wikis are Wikimedia
The word “wiki” refers to a website built using collaborative editing software. Hundreds of organizations and projects with no affiliation with Wikipedia or the Wikimedia Foundation also use the term, including wikiHow and WikiEducator.
Wikimedia has nothing to do with Wikileaks and never did. Although both use the term “wiki” in their name, they have always been completely separate and unaffiliated.
Help us unlock the world’s knowledge.
As a nonprofit, Wikipedia and our related free knowledge projects are powered primarily through donations.
Donate
Connect —
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Contact a human
Questions about the Wikimedia Foundation or our projects? Get in touch with our team.
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Photo credits
CEEMeeting2016_Armenia_Globe_26
AWang (WMF)
CC-BY-SA 4.0
Wikimedia Conference 2017
Jason Krüger/Wikimedia Deutschland e.V.
CC BY-SA 4.0
Papaul_Tshibamba-3
Victor Grigas
CC BY SA 3.0
SOPA protest in Midtown NYC
Zachary McCune
CC BY-SA 4.0
A history of all nations from the earliest times
Internet Archive Book Images
Public domain
Wikipedia logo
Nohat; Paullusmagnus; Wikimedia
CC BY-SA 3.0
Optic Projection fig 89
McAllister
Public domain
Wikimedia Commons logo - white
Reidab; User:Grunt; 3247
Public domain
May Mohamed Hisham Hashem
Ruby Mizrahi
CC BY-SA 3.0
Armine Aghayan
Victor Grigas
CC BY-SA 3.0
Sesame Street Spaghetti Space Chase
Walter Lim from Singapore
CC BY 2.0
Lighting through the ages
Maurice Dessertenne
Public domain
Art+Feminism Wikipedia edit-a-thon
Jens Mohr
CC BY-SA 3.0
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