MapWindow GIS
MapWindow is a fully free and open source geographic information system project. It includes an open source programming component, MapWinGIS ActiveX, and an extensible...
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.
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. used for geospatial data management and analysis, image processing, graphics/maps production, spatial modeling, and visualization, grass is currently used in academic and commercial settings around the world, as well as by many governmental agencies and environmental consulting companies.
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