Crunchbase - Crunchbase is a platform for discovering industry trends, investments, and news about companies around the world.
Madgicx - Ad performance beyond human limits
CB Insights - CB Insights is a company database for the venture capital and corporate development community.
Facebook Ad Hunter - Facebook Ad Hunter uncovers hidden audiences to target when running Facebook Ads.
Tracxn - data on companies
AdEspresso - Optimize your Facebook Ads Easily, Like Morning Coffee