Letter: X
- x264 - H264/AVC video streams encoder
- xbill - Stop Bill from loading his OS into all the computers
- xdtv - Video4Linux Stream Capture Viewer & Recorder
- xine-lib-extras-freeworld - Extra codecs for the Xine multimedia library
- xmms-mplayer - MPlayer plugin for XMMS
- xmms2-freeworld - Plugins for XMMS2 that cannot be included in Fedora
- xvidcore - MPEG-4 Simple and Advanced Simple Profile codec