Mixxx - The most powerful free DJ software in the world.
Serato DJ - Serato DJ is award winning, digital DJing software used by professionals across the globe.
Traktor Pro - Flagship DJ software with four decks and a stunning range of creative features for maximum freedom in DJing.
Djay - djay gives you instant access to all your existing tracks and playlists from iTunes.
VirtualDJ - Virtual DJ Software - MP3 and Video mix software for DJs
Pacemaker Editor - [You can still download last version of Pacemaker for Windows and Mac from Softonic: