Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Wide Angle Contact Transfer - Contact Transfer- easily manage contacts between iPhone, Android & PC with this Windows software. Transfer contacts directly between devices and edit them from your PC!
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.
My Contacts Backup - My Contacts Backup app enables users to keep track of their contacts list to merge or delete all the duplicate contacts.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Vcf File Contact Import - Vcf File Contact Import app provides features through which users can import a copy of their phone book to share it with their friends and family members in VCF format.