Magic Playlist - Get the playlist of your dreams based on a song
HyperTest - Release 10X Faster with an Automated Integration Testing
Spotalike - Spotify playlist with similar songs, according to Last.fm
Outseta - The "lean" tech stack for SaaS start-ups
Spotify - Map shows when two people play same song at same time
Cardlife - Track all your business subscriptions with Cardlife.