Imagine a world in which every single human being can freely share in the sum of all knowledge. That’s our commitment.
The nonprofit Wikimedia Foundation provides the essential infrastructure for free knowledge. We host Wikipedia, the free online encyclopedia, created, edited, and verified by volunteers around the world, as well as many other vital community projects. All of which is made possible thanks to donations from individuals like you. We welcome anyone who shares our vision to join us in collecting and sharing knowledge that fully represents human diversity.
Protect and sustain Wikipedia
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1
Wikimedia projects belong to everyone
You made it. It is yours to use. For free. That means you can use it, adapt it, or share what you find on Wikimedia sites. Just do not write your own bio, or copy/paste it into your homework.
2
We respect your data and privacy
We do not sell your email address or any of your personal information to third parties. More information about our privacy practices are available at the Wikimedia Foundation privacy policy, donor privacy policy, and data retention guidelines.
3
People like you keep Wikipedia accurate
Readers verify the facts. Articles are collaboratively created and edited by a community of volunteers using reliable sources, so no single person or company owns a Wikipedia article. The Wikimedia Foundation does not write or edit, but you and everyone you know can help.
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Not all wikis are Wikimedia
The word “wiki” refers to a website built using collaborative editing software. Projects with no past or existing affiliation with Wikipedia or the Wikimedia Foundation, such as Wikileaks and wikiHow, also use the term. Although these sites also use “wiki” in their name, they have nothing to do with Wikimedia.
Research
We conduct our own research and partner with researchers worldwide to address change in society and technology.
More about research![](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/06/Wikimedia_Conference_2017_–_228-e1533253661801.jpg?w=600&h=338&crop=1)
Technology
From site reliability to machine learning, our open-source technology makes Wikipedia faster, more reliable, and more accessible worldwide.
More about technology![](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/07/Screen-Shot-2018-07-30-at-1.24.58-PM-e1533254033550.png?w=600&h=338&crop=1)
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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.
![Wikipedia puzzle globe](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/08/Wikipedia-logo-e1534036958292.png?w=1024)
Wikipedia
Free encyclopedia written in over 300 languages by volunteers around the world.
![Wikimedia Commons logo](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/05/446px-commons-logo-svg.png?w=446)
Wikimedia Commons
The world’s largest free-to-use-library of illustrations, photos, drawings, videos and music.
See what we have been up to
![](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2023/06/Wikimania_2023_Singapore_Banner_logo_no_date.svg.png?w=800&h=600&crop=1)
Wikimania 2023 in Singapore centers on diversity, collaboration, and the future of free knowledge
In its eighteenth edition, Wikimania, the flagship annual conference that celebrates Wikimedia projects like Wikipedia and the volunteers who make them possible, is set to take place in Singapore.
![](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2023/07/AI-Blog-header-02.png?w=800&h=430&crop=1)
Wikipedia’s value in the age of generative AI
If there was a generative artificial intelligence system that could, on its own, write all the information contained in Wikipedia, would it be the same as Wikipedia today?
Wikimedians are heroes of free knowledge
![Sam Oye - Wiki Indaba 2017](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/02/sam_oye_wiki_indaba_2017_portraits1-e1534046032973.jpg?w=400&h=300&crop=1)
Sam Oyeyele
Editor since 2011, Wikimedia community![Photo of Armine Aghayan](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/06/Armine_Aghayan-1-e1531344565295.jpg?w=400&h=300&crop=1)
Arminé Aghayan
Editor since 2013, Wikimedia community![May Mohamed Hisham Hashem](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/06/May_Mohamed_Hisham_Hashem-e1531329549525.jpg?w=400&h=300&crop=1)
May Hachem
Editor since 2013, Wikimedia communityThroughout 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.
Help us unlock the world’s knowledge.
As a nonprofit, Wikipedia and our related free knowledge projects are powered primarily through donations.
Donate now![](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/06/ArtAndFeminism_2017_Livrustkammaren_06-e1533254907593.jpg?w=1024)
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Photo credits
![](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2023/06/Wikimania_2023_Singapore_Banner_logo_no_date.svg.png?w=63)
Illustrated by Adien Gunarta and Naila Rahmah
![](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2023/07/AI-Blog-header-02.png?w=63)
![Sam Oye - Wiki Indaba 2017](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/02/sam_oye_wiki_indaba_2017_portraits1-e1534046032973.jpg?w=63)
Zachary McCune/Wikimedia Foundation
![Photo of Armine Aghayan](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/06/Armine_Aghayan-1-e1531344565295.jpg?w=63)
Tomi Um / Wikimedia Foundation
![Wikimedia Conference 2017](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/06/Wikimedia_Conference_2017_–_228-e1533253661801.jpg?w=63)
Jason Krüger/Wikimedia Deutschland e.V.
![Man in front of computer servers](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/07/Screen-Shot-2018-07-30-at-1.24.58-PM-e1533254033550.png?w=63)
![Wikipedia puzzle globe](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/08/Wikipedia-logo-e1534036958292.png?w=63)
![Wikimedia Commons logo](https://web.archive.org./web/20230811095202im_/https://wikimediafoundation.org/wp-content/uploads/2018/05/446px-commons-logo-svg.png?w=47)