VirtualDJ - Virtual DJ Software - MP3 and Video mix software for DJs
Magic Playlist - Get the playlist of your dreams based on a song
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!
Spotalike - Spotify playlist with similar songs, according to Last.fm
Mixxx - The most powerful free DJ software in the world.
Spotify - Map shows when two people play same song at same time