Spotify.me - Beautiful analytics on your Spotify listening habits 🎧
SpotMenu - Spotify and iTunes in your macOS menu bar
Your 2017 Wrapped by Spotify - Relive all the music you discovered and loved in 2017.
Audio Habits - See your top artists and tracks on Spotify
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.
Spotalike - Spotify playlist with similar songs, according to Last.fm