Open Source Software (OSS)

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Open source software (OSS) doesn't just mean access to the source code. The distribution terms of open-source software must comply with the following criteria: free distribution; source code; derived works; integrity of the author’s source code; no discrimination against persons or groups; no discrimination against fields of endeavor; distribution license; license must not be specific to a product; license must not restrict other software; and license must be technology-neutral.

Source: The Open Source Definition, 22 March 2007