Playlist Machinery - Tools that help you create & organize your Spotify playlists
Hermes - Pandora Client for OS X
Heartbeat - Listen to music with your friends together, on Spotify
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
Magic Playlist - Get the playlist of your dreams based on a song
pianobar - “pianobar” is a free/open-source, console-based replacement for ...