Heartbeat - Listen to music with your friends together, on Spotify
Stereofox - Find awesome new music, explore artists & create playlists
Festify - Festify is a free Spotify-powered app that lets your guests choose which music should be played...
JamBuddy - Find and collaborate with musicians around you thru Spotify
BeatSense - Discover great music hand-picked by real people, in a single click. FREE and in real-time!
Gymspiration Bot - Random gym exercises in a gif for every muscle group