GRASS GIS
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GRASS (Geographic Resources Analysis Support System) is an open source, Free Software Geographical information system (GIS) with raster, topological vector, image processing, and graphics production functionality that operates on various platforms through a graphical user interface and shell in the X Window System. It is released under GNU General Public License (GPL).
See also
- Open GIS Consortium
- GRASS GIS main web site, Italy (http://grass.itc.it/)
- GRASS GIS mirror at ibiblio, USA (http://grass.ibiblio.org/)