Magic Playlist - Get the playlist of your dreams based on a song
Pzizz - Sleep at the push of a button! Now with "Focus"
Spotalike - Spotify playlist with similar songs, according to Last.fm
Brain.fm - Music designed for the brain to enhance focus, relaxation, meditation, naps and sleep within 10 - 15 minutes of use.
Playlist Machinery - Tools that help you create & organize your Spotify playlists
Sleep Watch - AI-powered, personalized insights about your sleep.