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GRASS GIS, commonly referred to as GRASS (Geographic Resources Analysis Support System), is a Geographic Information System (GIS) 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.

What's New

Version 6.4.3-130729:
  • Assistance for topologically unclean vector data
  • Major speedup for some vector modules
  • Fixes in the vector network modules
  • Fixes for the wxPython based portable graphical interface
  • New modules have been added for processing LANDSAT and MODIS satellite data
  • New vector statistics module
  • Many new symbols and north arrows more...


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Current Version (6.x)


Downloads 29,550
Version Downloads 1,155
License Free
Date 15 Aug 2013
Platform Intel 64 / OS X / Intel 32
Price Free
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