Jukebox - Collaborative music player
OutLoud Social Jukebox - Control the music with your friends in real-time
Festify - Festify is a free Spotify-powered app that lets your guests choose which music should be played...
Parallel - Listen to music with friends over Spotify at the same time
Heartbeat - Listen to music with your friends together, on Spotify
Partyhero - Pass your friends the aux!