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.
Pixelhub - Your Personal Page. Your Email Signature. Your vCard. Your Domain.
Open Contacts - Open Contacts is an advanced address book program for managing contact info of individuals and...
Virtuter - Create your own virtual social card, one card for all your social networks.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Carrd - Simple, responsive one-page site creator.