Crossfont Alternatives
Crossfont is described as 'Convert between various font formats on Windows' and is an app in the os & utilities category. There are three alternatives to Crossfont for Linux, Mac, Windows and Online / Web-based. The best alternative is FontForge, which is both free and Open Source. Other great apps like Crossfont are TruFont and BitFontMaker2™.
Free (libre) font editor for Windows, Mac OS X and GNU+Linux.
TruFont is a font-editing application written with Python3, ufoLib, defcon and PyQt5.