GRASS GIS

The Geographic Resources Analysis Support System, commonly

referred to as GRASS GIS, is an Open Source

Geographic Information System providing powerful

raster, vector and geospatial processing capabilities in a single

integrated software suite.

GRASS GIS includes tools for spatial modeling, visualization of

raster and vector data, management and analysis of geospatial data,

and the processing of satellite and aerial imagery. It also

provides the capability to produce sophisticated presentation

graphics and hardcopy maps.

GRASS GIS has been translated into about twenty languages and

supports a huge array of data formats. It can be used either as a

stand-alone application or as backend for other software packages

such as QGIS and R geostatistics. It is distributed freely under

the terms of the GNU General Public License (GPL). GRASS GIS is a

founding member of the Open Source Geospatial Foundation (OSGeo).