PeekaBeat - Turn your selfie into Spotify playlist 🎶
Lazyset - A Spotify playlist mixing Facebook Messenger bot
Party Blends - A way to blend your friends favourite tracks into one Spotify playlist.
Magic Playlist - Get the playlist of your dreams based on a song
Spotify Taste Rewind - What your music taste would have been like in past decades
Slackbox - Spotify playlist collaboration through Slack