Jdownloader — Master download manager

Offliberty — Offriendly: YouTube, Vimeo, BandCamp, SoundCloud, DailyMotion, MySpace, 4shared, …

Mixcloud Downloader — Provides tracklist and mp3 download links (I guess, supposedly, for some)

Tumtaster — Greasemonkey add-on for Firefox

ChromeTaster — Chrome extension

Bandcamp download links for Greasemonkey

Fastest Free YouTube Downloader [Win][Mac] — Option to boost volume up to 100%

Kiwi6 — Unlimited mp3 uploads

22Tracks — @2trakcs

Songify — Autotune app (re: Auto-Tune the News)