Youtube-DJ - Mix YouTube songs together
Spotify - Map shows when two people play same song at same time
Pacemaker - Create and share mixtapes with friends
Deezer - Deezer is a music streaming app created in France. It is available in 180 counties and gets 16 million users a month. 6 million of the users have paid subscriptions. Read more about Deezer.
PlayDeck - A DJ Player in browser 🎶
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm