Letter: A
- a52dec - A free ATSC A/52 stream decoder
- akmods - Automatic kmods build and install tool
- amule - File sharing client compatible with eDonkey
- arcem - Highly portable Acorn Archimedes emulator
- audacious-plugins-freeworld - Additional plugins for the Audacious media player
- audacity-freeworld - Multitrack audio editor
- autopano-sift-C - SIFT feature detection
- avbin - Cross-platform media decoding library
- avidemux - Graphical video editing and transcoding tool