Presstopia DNN Map is a mapping and geocoding add-on application for DotNetNuke. It uses the member's location information in their profile to obtain the member's latitude and longitude and plot them on a world map. The software is 100% free of charge, and licensed under an Apache Open Source License.

Features :

No database tables required
New member locations are geocoded in realtime via HTTP
Geocoded locations are persisted in an XML file
Uses Flash to render the map
Uses WorldKit to geocode member locations
Geocoding down to city level where available
Open source (Apache License)