Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Should I Answer? - See what phone numbers are most searched and find ratings and users reviews.
Call Notes Pro - Call Notes Pro helps you to identify who is calling you. You won’t have to ask yourself “who is it?
Phone.Report - Complete phone number report.
FCorp ID Book - ID Book is a handy, easy to use application specially designed to offer users a simple address book.
CallerSmart - CallerSmart is an application that is basically used for the purpose of looking up mystery phone numbers for free.