GigMasters - Event marketplace for booking live music artists, DJs, photographers and more.
Gnoosic - Even if you don't know what you are looking for - gnod will find it.
Fyre - On-demand platform for celebrity booking.
Musicroamer - A visual Pandora for discovering new music
Gigtown - Discover and book live music
TasteDive - TasteDive recommends similar music (musicians, bands), movies, TV shows, books, authors and games, based on what you like.