Letter: G
- gambatte - An accuracy-focused Game Boy / Game Boy Color emulator
- gecko-mediaplayer - Gnome MPlayer browser plugin
- gfceu - GFCE Ultra Nintendo Emulator frontend
- gnome-mplayer - An MPlayer GUI, a full-featured binary
- gpac - MPEG-4 multimedia framework
- gstreamer-plugins-bad - GStreamer streaming media framework "bad" plug-ins
- gstreamer-plugins-ugly - GStreamer streaming media framework "ugly" plug-ins