Cardhop - The Mac contacts app you'll want to use.
Simple Contacts - Contact lens prescriptions from home
Keep In touch - Keep in touch with thousands of people
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.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Highly for iOS - Medium-style highlighting in every app and website. 🖌