Crunchbase - Crunchbase is a platform for discovering industry trends, investments, and news about companies around the world.
Mattermark - Ranking 800,000+ high growth Internet companies
AngelList - Access top deals through investor-led syndicates
Breakout List - A list of the fastest growing startups
Private Equity List - Private equity, venture capital database that focuses on growing sectors in emerging countries and contains contacts of investment professionals.
FundingPath - Tech company valuations visualised