FontForge - Free (libre) font editor for Windows, Mac OS X and GNU+Linux
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Glyphs - Make everything from dingbat webfonts to full-fledged text typefaces in the most Mac-like font...
AIMP - AIMP : Free Audio Player : Официальный сайт программы
FontCreator - This professional font editor allows you to create and edit TrueType and OpenType fonts.
foobar2000 - An advanced freeware audio player for the Windows platform.