Font Tools https://github.com/fontforge/fontforge https://github.com/fonttools/fonttools https://github.com/lixiaoyan/fontasy Format Library OpenType https://github.com/opentypejs/opentype.js https://github.com/aliftype/xits https://github.com/kawabata/glyphwiki-afdko https://github.com/redox-os/rusttype TrueType https://github.com/ynakajima/ttf.js UCDOS https://github.com/wincss/ucfont BMFont https://github.com/mattdesl/bmfont-lato sfntly https://github.com/googlefonts/sfntly Runtime Modifier https://github.com/ysc3839/FontMod Workaround https://github.com/Jamesits/windows-10-font-fallback-reg