Crunchbase - Crunchbase is a platform for discovering industry trends, investments, and news about companies around the world.
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
CB Insights - CB Insights is a company database for the venture capital and corporate development community.
CallApp - Free Caller ID & Call Blocker app that allows mobile users to block phone calls, identify calls, blacklist unwanted callers and much more.
Owler - Owler is a crowdsourced data model allowing users to follow, track, and research companies.
CallerSmart - CallerSmart is an application that is basically used for the purpose of looking up mystery phone numbers for free.