Wonder.fm - Discover new music. New site by We Are Hunted co-founder.
Noted - Social music discovery
CLiGGO MUSIC - CLiGGO MUSIC provides free music enjoyment on your pc, smart phone or tablet.
Cymbal - Music discovery powered by friends
avant.fm - Avant.fm provides a customizable, listenable feed of new releases from the best indie record labels, across all genres.
humit - A social networking app for music sharing and discovery.