VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Corel WinDVD Pro - Get top-quality playback with the world’s most popular Blu-ray and DVD software, Corel WinDVD Pro 12
Knowthelist - Knowthelist - the awesome party music player Easy to use for all party guests
Pretty Good Music Player - Music player that focuses on basics: rock solid music playing.
MixTape - Home of MixTape, an OSX application for creating beat matched mixes with simple export to the web or iTunes.
Switch Player - Media playback, inspection and conversion tool