BeatMix - Enables Shuffle and Radio for multiple artists in Spotify
Your 2017 Wrapped by Spotify - Relive all the music you discovered and loved in 2017.
Playlist Machinery - Tools that help you create & organize your Spotify playlists
Spotify.me - Beautiful analytics on your Spotify listening habits 🎧
Slackbox - Spotify playlist collaboration through Slack
Listen - A smart phone number