Jukebox - Collaborative music player
The Wub Machine - Turn any music into Dubstep, Drum & Bass, and more.
OutLoud Social Jukebox - Control the music with your friends in real-time
The Eternal Jukebox - For when your favorite song just isn't long enough
Festify - Festify is a free Spotify-powered app that lets your guests choose which music should be played...
YOU.DJ - Mix SoundCloud music and Youtube videos live in your browser.