Heartbeat - Listen to music with your friends together, on Spotify
Playlist Machinery - Tools that help you create & organize your Spotify playlists
Liyo - Stream your favorite music live with friends 🎶
Playlistor - Convert Apple Music playlists to Spotify and vice versa
Festify - Festify is a free Spotify-powered app that lets your guests choose which music should be played...
FreeYourMusic - Migrate from and to any music services