Product Hunt - A website that lets users share and discover new products
BetaList - BetaList provides an overview of upcoming internet startups. Discover and get early access to the future.
Fire Hunt - Discover product launches from all over the web at one place
PitchWall - Browse new startups, and submit your mobile app/games startup's beta page here.
thingtesting - Your guide to new brands.
Startup Buffer - Startup Buffer is a premium startup directory for emerging startups all around the world.