Apache-2.0 Artistic BSD BSD-2 CC-BY-2.0 CC-BY-4.0 CC-BY-SA-3.0 CC-BY-SA-4.0 CC0-1.0 FDL-1.1+ GPL-1+ GPL-2 GPL-2+ GPL-3 GPL-3+ LGPL-2+ LGPL-3 LPPL-1.0 LPPL-1.2 LPPL-1.3 LPPL-1.3a LPPL-1.3c MIT OFL-1.1 TeX-other-free public-domain
