Openwhyd - Collect and Share the tracks you love.
Koel - A personal music streaming server that works.
SoundClick - SoundClick is a music-based social community.
Mood Listener - Handpicked playlists to fit your mood.
Music Smasher - Find any song. Music Smasher searches Spotify, Rdio, SoundCloud, Bandcamp, and YouTube.
longplay.in - Curated indie music from Bandcamp