FCorp ID Book - ID Book is a handy, easy to use application specially designed to offer users a simple address book.
Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Drupe - Next generation contact manager and dialer.
ThisNumber - ThisNumber helps you find phone numbers for people and businesses!
Simple Contacts - Contact lens prescriptions from home