AngelList - Access top deals through investor-led syndicates
Crunchbase - Crunchbase is a platform for discovering industry trends, investments, and news about companies around the world.
CB Insights - CB Insights is a company database for the venture capital and corporate development community.
Private Equity List - Private equity, venture capital database that focuses on growing sectors in emerging countries and contains contacts of investment professionals.
Tracxn - data on companies
Fundcomb - Freely searchable database of all investor types globally