PartyWith - Connecting people who love to party - anytime, anywhere.
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.
Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
Spotalike - Spotify playlist with similar songs, according to Last.fm
MisterJack - Make and share playlists
Spotify.me - Beautiful analytics on your Spotify listening habits 🎧