Earlier quoted context omitted.
Right, so you might have, for example, FreeBSD, which as distributed by the FreeBSD developers is free software , but which can also potentially be used in a proprietary downstream product, which is not free software . The FreeBSD developers did not deny users any of the four freedoms. They just allowed other people to potentially do so. This Venn diagram is FSF's view of the taxonomy: https://www.gnu.org/philosophy/…
I was wrong indeed, thanks for the precision :-). So: Permissive licenses are free in the sense that they allow making free software (but they also allow making non-free software). GPLv3 enforces the complete derived work to be free. LGPLv3 says that the particular library should stay free. GPLv2, LGPLv2 and MPLv2 say that the source code (either of the whole derived work or just the library) should stay free, but ti…
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