Playlist Machinery - Tools that help you create & organize your Spotify playlists
keezy - A colorful soundboard. Play with music.
BeatMix - Enables Shuffle and Radio for multiple artists in Spotify
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
Magic Playlist - Get the playlist of your dreams based on a song
Splice - Music creation, collaboration, and sharing made simple.