GeeXboX
GeeXboX is linux distribution providing media-center system for PCs. Version 2.0 and later uses popupar XBMC (later renamed to Kodi) software for media playback. One of the main benefits of GeeXboX is, that it don't require a harddrive, whole OS can be used from LiveCD or LiveUSB. The last known version (3.1) was released in November 2013.
Links: Homepage
