BeatSense - Discover great music hand-picked by real people, in a single click. FREE and in real-time!
Parallel - Listen to music with friends over Spotify at the same time
Twinjack - Stream Spotify music with anyone with just a link
Slackbox - Spotify playlist collaboration through Slack
Liyo - Stream your favorite music live with friends 🎶
Join My Playlist - Listen to music live together with your friends in Spotify.