Wikimedia Foundation

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The Wikimedia Foundation is the non-profit organization that operates Wikipedia and other free knowledge projects. Together these sites are the fifth most visited web property in the world. The Wikimedia Foundation is a 501(c)(3) tax-exempt non-profit organization with offices in San Francisco, California, USA. You can review our letter of tax-exemption and our financial reports and annual filings. Our mission is to empower a global volunteer community to collect and develop the world's knowledge and to make it available to everyone for free, for any purpose. We work together with a network of chapters in many different countries to achieve this goal.

Learn more at:   https://wikimediafoundation.org/