Mixxx - The most powerful free DJ software in the world.
Youtube-DJ - Mix YouTube songs together
ClubDJPro - ClubDJPro is the most responsive and simple-to-use DJ Software, for making heart pumping video and sound blend sessions.
Pacemaker - Create and share mixtapes with friends
Deckadance - Deckadance is a DJ mixing application that works either as a standalone program OR as a VSTi inside...
djay Pro for iPad - djay Pro provides a complete toolkit for performing DJs.