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.
Steward Database - Steward is a personal database for organizing everything. It's easy to use.
Open Contacts - Open Contacts is an advanced address book program for managing contact info of individuals and...
Pakker - Pakker is an easy to use personal database with a visual form designer and easy sharing.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
tinyblu - Never neglect your friends again. See how long it's been since you last hung out.