aux.app - A free web-based music platform to play music from other popular online streaming services.
BeatSense - Discover great music hand-picked by real people, in a single click. FREE and in real-time!
Jukebox - Collaborative music player
Twinjack - Stream Spotify music with anyone with just a link
humit - A social networking app for music sharing and discovery.
Quorus - A new way to listen to music through collaboration