Dealroom.co - Identify promising companies before everyone else. Dealroom helps professional investors, corporates and local governments to discover & track innovative tech companies.
Crunchbase - Crunchbase is a platform for discovering industry trends, investments, and news about companies around the world.
PitchWall - Browse new startups, and submit your mobile app/games startup's beta page here.
PitchBook - PitchBook is an award winning data & technology provider for the global private equity and...
Tracxn - data on companies
CB Insights - CB Insights is a company database for the venture capital and corporate development community.