FCorp ID Book - ID Book is a handy, easy to use application specially designed to offer users a simple address book.
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Phone2Location - Caller ID, phone number tracker, call blocker, contacts location, works offline
ThisNumber - ThisNumber helps you find phone numbers for people and businesses!
Call Notes Pro - Call Notes Pro helps you to identify who is calling you. You won’t have to ask yourself “who is it?
Sync.ME - Search over 1 Billion phone numbers worldwide. Identify unknown phone numbers and block unwanted calls.