Javalanche Includes full Javadoc documentation and description of classes for a Java application designed for analyzing the threat of natural hazards to roads, using a neighborhood search to produce a hazard map that is directly related to the road that is affected by any given hazard.
WiFiMaps Locate free Wi-Fi, commercial hotspots, community wireless networks, and wardriving data with this web based GIS mapping application.
Sportsmapping.com Mapping and GIS source for golf courses and communities.
Marinamap.com Find marinas by mouseclick on the marinamap sea chart.
Nature Conservancy Provides staff and partners with GIS knowledge, systems, data, maps, and community resources. Some sections are limited to Conservancy and Natural Heritage/CDC staff.
93 Photo Street Photo map editor. It enables quickly placing digital photos on free maps of anywhere in the US.
A2B Location based search engine finds websites by their proximity to a given location. It accepts GeoURL ICBMs and geotags for adding sites, and has an open API for developers.