ESRI is the world leader in GIS (geographic information system) modeling and mapping software and technology. This site features GIS mapping software, desktop GIS, server GIS, developer GIS, mobile GIS, GIS Web services, business GIS, Inter...
GRASS GIS (Geographic Resources Analysis Support System) is an open source, free software (FOSS) Geographical Information System (GIS) with raster, topological vector, image processing, and visualization functionality
MapWindow is an Open Source geographical information System that is free to Download. It is extensible, and as well uses and ActiveX control that allows custom programming. MapWindow Also supports the development of Plug-ins so that anyone...
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