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Wikimedia Foundation Wikimedia Foundation Toggle menu Wikimedia Foundation Current language: en English العربية 中文 Français Español Donate now Our Work Support Wikipedia Research Advocacy Technology News Participate About Toggle search SearchImagine a world in which every single human being can freely share in the sum of all knowledge.�� ������ �� ������ ���� ������ �� �� ����� �������� ��� �� ��� ����� �� ��� ��� ���� �� ���� ���Imaginez le monde dans lequel chaque être humain peut partager librement la somme de toutes les connaissances.تخيل عالما يستطيع فيه كل أنسان ان يشارك بحريه في مجموع المعرفةImagine el mundo en el que cada ser humano puede compartir libremente la suma de todo el conocimiento.

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 Donate now English· العربية · 中文 · Français · Español 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.

4 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.

200,000+editors contribute to Wikimedia projects every month Tweet this 47+ millionmedia files on Wikimedia Commons Tweet this 1+ billionunique devices access Wikimedia projects every month Tweet this


We conduct our own research and partner with researchers worldwide to address change in society and technology.


From site reliability to machine learning, our open-source technology makes Wikipedia faster, more reliable, and more accessible worldwide.


We fight to protect everyone’s right to access free and open knowledge.

Projects — 項目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.

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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.

NEWS — الأخبار See what we have been up to
14 October 2019

Amazon to help advance free knowledge for all with new $1 million gift to the Wikimedia Endowment

We are pleased to announce a new $1 million gift to the Wikimedia Endowment from Amazon to support greater access to information for everyone. This is Amazon’s second gift to the Wikimedia Endowment, a permanent fund dedicated to ensuring the long-term sustainability of Wikipedia and the other Wikimedia free knowledge projects. When Wikipedia was created….

Read more
4 October 2019

Who are the organizers that grow Wikimedia’s communities? New research on actors that bring energy to the Wikimedia movement

The face of Wikipedia’s volunteer community is often an editor—someone who maintains, edits, and writes facts in the vast online encyclopedia. But editors aren’t the only contributors to Wikipedia, WikiCommons, and the other Wikimedia projects: there are many other volunteers who contribute by organizing events and inspiring others to join our volunteer community. Their work,….

Read more Profiles — PerfilesWikimedians are heroes of free knowledge.
Emily Temple-Wood
Editor since 2007, Wikimedia community
Vitor Mazuco
Editor since 2009, Wikimedia community
Pranayraj Vangari
Editor since 2013, 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 Help us unlock the world’s knowledge.

As a nonprofit, Wikipedia and our related free knowledge projects are powered primarily through donations.

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