Lazyset - A Spotify playlist mixing Facebook Messenger bot
Playlist Machinery - Tools that help you create & organize your Spotify playlists
DiscVibe - Create personalized and contextualized Spotify playlists
Magic Playlist - Get the playlist of your dreams based on a song
PeekaBeat - Turn your selfie into Spotify playlist 🎶
Spotify.me - Beautiful analytics on your Spotify listening habits 🎧