Spotify - Map shows when two people play same song at same time
Spotify.me - Beautiful analytics on your Spotify listening habits 🎧
Lazyset - A Spotify playlist mixing Facebook Messenger bot
Your 2017 Wrapped by Spotify - Relive all the music you discovered and loved in 2017.
22tracks - DJ curated Spotify playlists on iOS
SpotMenu - Spotify and iTunes in your macOS menu bar