Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Clearbit - Clearbit provides Business Intelligence APIs
WhosCall - WhosCall is a reliable caller ID app whose popularity has led to its adoption by many users including international media. You can now manage the numbers calling you regardless of whether they are part of your contact list or not... read more.
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
CallApp - Free Caller ID & Call Blocker app that allows mobile users to block phone calls, identify calls, blacklist unwanted callers and much more.
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.