Openwhyd - Collect and Share the tracks you love.
Thounds - Thounds is a home for your music thoughts. Share them with your friends and let them grow!
musiqpad - Musiqpad is a social-music software platform for users to host their own ‘pads’ (rooms).
SoundCloud - Enjoy music & follow favourite artists
BeatSense - Discover great music hand-picked by real people, in a single click. FREE and in real-time!
Bandcamp - Discover amazing music and directly support the artists who make it.