Audioship - Upload audio to YouTube or Facebook
Playmoss - Create playlists from YouTube, Vimeo and SoundCloud
TunesToTube - What does TunesToTube do?
Playlist Machinery - Tools that help you create & organize your Spotify playlists
podsync - Simple and free service that lets you listen to any YouTube or Vimeo channels, playlists or user videos in podcast format
Playlistor - Convert Apple Music playlists to Spotify and vice versa