SubmitHub - SubmitHub makes it easy to contact music bloggers, Spotify playlisters, record labels and more. We give you all sorts of statistics and ways to filter who to send your music to.
Festify - Festify is a free Spotify-powered app that lets your guests choose which music should be played...
Spotalike - Spotify playlist with similar songs, according to Last.fm
Twinjack - Stream Spotify music with anyone with just a link
Spotify.me - Beautiful analytics on your Spotify listening habits 🎧
Parallel - Listen to music with friends over Spotify at the same time