Listenbox - Podcasts from audio & video on the web
4K Download Online - Download music from YouTube to Android, SoundCloud to Android, Facebook to Android, Vimeo to Android, from browser to device or to desktop directly.
podsync - Simple and free service that lets you listen to any YouTube or Vimeo channels, playlists or user videos in podcast format
GetGo Download Manager - GetGo Download Manager is the best free internet download manager designed for the new generation of web sites (web 2.0)
Audioship - Upload audio to YouTube or Facebook
Video Downloader Professional - Video Downloader Professional (VDP) is an pretty smart and fast tool to catch videos from YouTube.