Midnight Mage Software has released free Address Book software for Mac OS X 10.3 and 10.4.
Google Go Actions are a set of Mac OS X Address Book plug-ins that allow users to get Google directions and/or a Google map to any entry in their Address Book instantly.
The software augments the available fields (phone and email, for example) within Address Book, adding new Actions to those available from within the address field.
It adds two new Actions:
"Google Map For" shows the map of the location using Google Maps as the default browser.
"Google Directions To" will launch Google Maps with directions to this location from your home address (based on the "Me" entry in Address Book).