Spotify.me - Beautiful analytics on your Spotify listening habits 🎧
Playlist Machinery - Tools that help you create & organize your Spotify playlists
Your 2017 Wrapped by Spotify - Relive all the music you discovered and loved in 2017.
SpotMenu - Spotify and iTunes in your macOS menu bar
Magic Playlist - Get the playlist of your dreams based on a song
Stapp - Stapp is a powerful tool that allows you to block all the tracks, artists, and albums that you do not like on Spotify just by adding them to the blacklist.