Lazyset - A Spotify playlist mixing Facebook Messenger bot
Playlist Machinery - Tools that help you create & organize your Spotify playlists
DiscVibe - Create personalized and contextualized Spotify playlists
Poolside FM for Mac - An infinity pool of summer sounds in your Mac menu bar
PeekaBeat - Turn your selfie into Spotify playlist 🎶
Listen for Mac - Add songs to Spotify playlists using keyboard shortcuts