Mobilemaps Nearby-Engine can be made to work with most any mapserver, or Web service conforming to the Open GIS Consortium standard. However, our favoured configuration uses the open source MapServer from the University of Minnesota. The hcslmap script is custom to the High Country Mapserver, and uses the rendering engine of MapServer (shp2img) for displaying a single image, but provides it's own map caching mechanism.
It has preconfigured layers for street-level through world-wide level maps, and these layers can be added or subtracted. Much of this document is an extension on MapServer's own installation files, so please refer to the MapServer website for further information. http://mapserver.gis.umn.edu/http://mobilemaps.com/faq_files/install_mapserver.html