GMapsPro
From HAA Best Practices Wiki
GMapsPro is a group of extensions for Joomla that enable a site to display Google Maps with markers showing where registered members of the site are located. GMapsPro is "subscription-ware." This means that you pay a fee for access to the software and the documentation. Currently (1/14/09) the fee is $25 for six months. You need to renew the fee only if you need continuing access to the documentation. Home base for GMapsPro is here.