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Mostly written in C
License: Creative_Commons_AttributionShareAlike_2_5-deleted, gpl
License: zlib_libpng
Mostly written in C++
License: LGPLv2_1, mozilla_public_2_0
License: lgpl21_or_later
License: gpl
O
License: ccbysa3-0, gpl
License: cc-by-4, mit
License: gpl, gpl3
Mostly written in TypeScript
License: creativecommons_org-licenses-by-sa-3_0, lgpl21_or_later
License: BSD-3-Clause