Vidlis - Create music playlists from YouTube videos.
Quorus - A new way to listen to music through collaboration
DiskyT - Youtube playlists done right
BeatSense - Discover great music hand-picked by real people, in a single click. FREE and in real-time!
OrganizeTube - Create video playlists from Youtube, Vimeo and other sources
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.