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.
Plan - Plan is a better way to organize.
Open Contacts - Open Contacts is an advanced address book program for managing contact info of individuals and...
Outplanr - Turn your to-do list into a real work plan
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Clean Google Calendar - Makes Google Calendar look nicer & launches as a desktop app