The following outline is provided as an overview of and topical guide to free software and the free software movement:

Free softwaresoftware which can be run, studied, examined, modified, and redistributed freely (without any cost). This type of software, which was given its name in 1983, has also come to be known as "open-source software", "software libre", "FOSS", and "FLOSS". The term "Free" refers to it being unfettered, rather than being free of charge.

Large free software projects

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Free software by type

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Free and open-source software packages (by type)

Free software products

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Operating system families

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Open-source software development products

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Free software movement

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Challenges

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Free software licenses

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Specific licenses

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License types and standards

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History of the free software movement

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Events

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Organizations

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Persons influential in the free software movement

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Well known scholars

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Other leading personalities

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See also

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