Playmoss - Create playlists from YouTube, Vimeo and SoundCloud
TubeLister - Generate a YouTube playlist from your opened tabs.
Playlist Machinery - Tools that help you create & organize your Spotify playlists
OrganizeTube - Create video playlists from Youtube, Vimeo and other sources
Audioship - Upload audio to YouTube or Facebook
Vidlis - Create music playlists from YouTube videos.