VirtualDJ - Virtual DJ Software - MP3 and Video mix software for DJs
Parallel - Listen to music with friends over Spotify at the same time
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!
Slackbox - Spotify playlist collaboration through Slack
Mixxx - The most powerful free DJ software in the world.
TuneMeet - Chat with people who are listening to the same song