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 - Put the power of full contact information into your web or mobile apps.
Contact PEA - Encrypted contact management tool.
Open Contacts - Open Contacts is an advanced address book program for managing contact info of individuals and...
Pobuca Connect - Connect with your contacts.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts