Calyp is an open-source raw video player for image/video analysis
Light Alloy is a media player for Windows
The best collection of tools for MLB.com content and MLB.TV for Linux.
Launch a twitch stream using Livestreamer
A conversion of the android app by Droidbender
fPlayer is a GPL free audio player for Windows and Android.
WeebTv Player
mplayer best edition
Feedreeder with support for streaming video and audio files on iOS5+