ContactRescue - Magically get your address book up-to-date and accurate
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.
Wall Of Me - Wall of me: all your favorite socials in a single place.
Open Contacts - Open Contacts is an advanced address book program for managing contact info of individuals and...
Clearbit Connect - Clearbit Connect is a free extension that surfaces actionable information on the people who email you.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts