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Free Software Foundation

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The Free Software Foundation (FSF) is a nonprofit with a worldwide mission to promote computer user freedom and to defend the rights of all free software users.

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FSF is a 501(c)(3) charity, and your membership dues are tax-deductible in the USA.

The FSF is a charity with a worldwide mission to advance software freedom — learn about our history and work.

The FSF also has sister organizations in France, Latin America, Europe and India.