A suite of tools for working with font files. The tools focus on comparing, manipulating, and validating font files that are to be shipped for Apple’s operating systems. Graphical tools includes Blinker, Font Proofer X, and MorxTester. Command line tools include ftxanalyzer, ftxdiff, ftxdumperfuser, ftxdumpfond, ftxenhancer, ftxfusefond, ftxglyphadder, ftxinstalledfonts, ftxmakettc, ftxruler, ftxsplitter, ftxstamper, ftxvalidator, ATSValidator, and two additional tools: klcompiler and kluchrtoxml for developing keyboards.