PlaylistMap - Connect with Spotify playlist curators from around the world
SoundCloud Charts - The most played tracks on SoundCloud this week
Playlist Machinery - Tools that help you create & organize your Spotify playlists
Kindreds - An app for musicians that want to meet jam buddies
BeatSense - Discover great music hand-picked by real people, in a single click. FREE and in real-time!
humit - A social networking app for music sharing and discovery.