Playlist Machinery - Tools that help you create & organize your Spotify playlists
Spotify.me - Beautiful analytics on your Spotify listening habits 🎧
Poolside FM for Mac - An infinity pool of summer sounds in your Mac menu bar
Magic Playlist - Get the playlist of your dreams based on a song
Listen for Mac - Add songs to Spotify playlists using keyboard shortcuts
Spotify - Map shows when two people play same song at same time