Live365 - 5,000+ online radio stations run by real people, not generated by computers.
Spotify - Map shows when two people play same song at same time
Streampusher - Start your own internet radio station
tradiio - Reward-based music discovery app
SHOUTcast Radio - SHOUTcast Radio is the home of free Internet Radio.
Magic Playlist - Get the playlist of your dreams based on a song