Mixxx - The most powerful free DJ software in the world.
Cantabile - Plugin host for live performance.
VirtualDJ - Virtual DJ Software - MP3 and Video mix software for DJs
Gig Performer - Gig Performer is a cross-platform audio plugin host for live music performances
Traktor Pro - Flagship DJ software with four decks and a stunning range of creative features for maximum freedom in DJing.
Blue Cat's PatchWork - Blue Cat's PatchWork is a universal plug-ins patchbay and multi FX that can host up to 64 VST, VST3, Audio Unit or built-in plug-ins into any Digital Audio Workstation (DAW) in a single instance, with both serial and parallel routing options.