SoundClick - SoundClick is a music-based social community.
DiskyT - Youtube playlists done right
Openwhyd - Collect and Share the tracks you love.
OrganizeTube - Create video playlists from Youtube, Vimeo and other sources
FoxTube - Play YouTube video continuously with playlists. FoxTube features:
Tuned Rocks📺 - Discover🔎 curated Youtube videos 24/7