Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Number Checker. All World - Check the telephone number to identify the country, state, region, city, mobile operator.
CallerSmart - CallerSmart is an application that is basically used for the purpose of looking up mystery phone numbers for free.
Cute Web Phone Number Extractor - It extracts valid phone, fax number, and mobile numbers from a search engine, websites and files.
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.
ZabaSearch - Find people free with Zabasearch directory engine that includes free people search, reverse phone number lookup, address lookup, and more.