Muru Music - Personalised playlists within seconds.
Heartbeat - Listen to music with your friends together, on Spotify
Playlist Machinery - Tools that help you create & organize your Spotify playlists
Festify - Festify is a free Spotify-powered app that lets your guests choose which music should be played...
Jukebox - Collaborative music player
Join My Playlist - Listen to music live together with your friends in Spotify.