Gnoosic - Even if you don't know what you are looking for - gnod will find it.
Soundplate Clicks - The ultimate smart link system for music marketing
BandNext - Discover bands that sound similar to artists you already love with BandNext. A single click saves your results to a Youtube playlist.
Label Engine - Label Engine is a digital music distribution platform intended for sharing and promoting music around the globe.
Musicroamer - A visual Pandora for discovering new music
DistroKid - Unlimited uploads to iTunes and more. Keep 80-100% of your royalties.