Playlist Machinery - Tools that help you create & organize your Spotify playlists
Youtube-DJ - Mix YouTube songs together
TrackStack - Easy Spotify playlist sharing and collaboration
YOU.DJ - Mix SoundCloud music and Youtube videos live in your browser.
BeatMix - Enables Shuffle and Radio for multiple artists in Spotify
Edjing - Discover edjing and edjing Pro, the most powerful DJ apps for music lovers! Mix on Android, Windows and iOS devices and record then share your DJ sets!