Youtube-DJ - Mix YouTube songs together
Edjing - Discover edjing and edjing Pro, the most powerful DJ apps for music lovers! Mix on Android, Windows and iOS devices and record then share your DJ sets!
YOU.DJ - Mix SoundCloud music and Youtube videos live in your browser.
Pacemaker - Create and share mixtapes with friends
The Eternal Jukebox - For when your favorite song just isn't long enough
djay Pro for iPad - djay Pro provides a complete toolkit for performing DJs.