Mixxx - The most powerful free DJ software in the world.
Madeon's Adventure Machine - Online remixing tool
VirtualDJ - Virtual DJ Software - MP3 and Video mix software for DJs
The Wub Machine - Turn any music into Dubstep, Drum & Bass, and more.
Traktor Pro - Flagship DJ software with four decks and a stunning range of creative features for maximum freedom in DJing.
Serato DJ - Serato DJ is award winning, digital DJing software used by professionals across the globe.