Son.gg in Slack - Share music with your team in Slack
Heartbeat - Listen to music with your friends together, on Spotify
Jukebox - Collaborative music player
Liyo - Stream your favorite music live with friends 🎶
Festify - Festify is a free Spotify-powered app that lets your guests choose which music should be played...
TuneMeet - Chat with people who are listening to the same song