HEATKEYS

Convert files from AutoCAD DXF and DWG to ESRI Shapefile or KML for Google Maps and Google Earth.

CADTutor provides free video tutorials, articles, downloads and a busy community forum for users of AutoCAD and associated software.

Image creators and filters

Land surveyors support network, featuring Surveying Discussion Forum,Surveying Directory, Photos, Videos and Articles.

Be Communities is a social networking site for those in the architecture, engineering, construction, operations, and GIS communities with tools such as forums, blogs, a resource gallery, and a wiki for connecting, communicating, and learning from eac...

Autodesk User Group International (AUGI) discussion forums.

GIS Mapping Software - Global Mapper is a comprehensive GPS mapping software suite that allows users to view satellite maps and aerial photos.

ExpertGPS is GPS mapping software for Garmin, Magellan, and Lowrance GPS. View waypoints and GPS tracklogs on USGS topo maps and aerial photos. Send GPS data to GIS ArcView.

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

The Natural Resources Conservation Service is the Federal agency that works in partnership with the American people to conserve and sustain natural resources on private lands.