Magic Playlist - Get the playlist of your dreams based on a song
Liyo - Stream your favorite music live with friends 🎶
Spotalike - Spotify playlist with similar songs, according to Last.fm
Quorus - A new way to listen to music through collaboration
Playlist Machinery - Tools that help you create & organize your Spotify playlists
CueBot - A better way to request for songs at a party 🎉