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| − | A '''Free Software''' [[source code license]] meets both [[open source]] and [[share alike]] constraints. Unlike generic open source, improvement without [[sharing]] is impossible. While share-alike such as [[Creative Commons]] allows restrictions on the sharing such as "[[no commercial use]]" or [[no derivative works]], free software doesn't. In part this is because of the nature of software to be continually improved and the fact that it doesn't necessarily lose the powers or integrity that older versions have because new ones have been added. One can add functions to software that are invisible to users of the old functions, unlike for instance a book or a political platform.
| + | #REDIRECT [[Free Software Movement]] |
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| − | The [[GPL]] and [[LGPL]] more or less completely define the free software movement. While there are other licenses, such as the [[peace license]] used by [[WarFTP]] in its early releases, these have not typically survived long.
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| − | While it is technically a form of license, its requirements are so specific that it has spawned the [[sourceforge]] and [[open outsourcing]] models of development (and some say the [[opentroll]] method), thus it qualifies as a "methodology", at least the core of one.
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| − | [[Category:Software design methodologies]]
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