This one is a Flash based map application that can be ported into many situations. It loads in 120+ map files, all scalable vector graphics. This is a fully dynamic application that loads the map files based on an xml file on the server. It also draws out "hot spots" a coordinate list in the XML file. You can use this for any image map or layered image map. Changing out the maps it displays are as simple as editing the XML file. I will soon build a Flash content management system for the app. For now, it is still in stage 1.
http://www.expodisc.com/wheretobuy/