Playlist Machinery - Tools that help you create & organize your Spotify playlists
Pixellu SmartAlbums 2 - The fastest, easiest and most intuitive album design software available.
Playlistor - Convert Apple Music playlists to Spotify and vice versa
Moments Designer - Moments is a complete album design package aimed for both professional and amateur photographers.
FreeYourMusic - Migrate from and to any music services
Fundy Designer - A Professional Suite for Professional Photographers.