Visualify - Visualize your top artists on Spotify
Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
SYQEL - Bring your music to life
Palaround - Meet people you should be friends with.
Kaleidosync - Kaleidosync is an all-in-one Spotify music visualizer that is all set to deliver a top-notch music experience with real-time support.
Babble - A more personalized social network