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.
Awesome Cal - Awesome Cal is a Calendar application for your iPhone that you can take anywhere and keep close by to monitor all the upcoming birthdays, festivities, meetings, and more from a single place.
Open Contacts - Open Contacts is an advanced address book program for managing contact info of individuals and...
24me - Next Generation Personal Assistant
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Calvetica - The fast calendar for iPhone. Add an event in just two quick taps.