Pyro - Spotify music voting for parties
Deezer - Deezer is a music streaming app created in France. It is available in 180 counties and gets 16 million users a month. 6 million of the users have paid subscriptions. Read more about Deezer.
Playlistful - Collaborative playlists for parties!
Mood Listener - Handpicked playlists to fit your mood.
klaep - music collaboration - klaep is a social music collaboration network for musicians
Quorus - A new way to listen to music through collaboration