Quantum GISQGIS http:qgis'orgindex'php

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Quantum GISQGIShttp//qgis.org/index.php

• A user friendly Open Source Geographic
  Information System (GIS) that runs on Linux,
  Unix, Mac OSX, and Windows. QGIS supports vector,
  raster, and database formats. QGIS is licensed
  under the GNU Public License.

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Major Features

• Support for spatially enabled PostGIS tables
• Support for shapefiles, ArcInfo coverages,
  Mapinfo, and other formats supported by OGR
• Raster support for a large number of formats
• Identify features
• Display attribute tables
• Select features
• GRASS Digitizing
• Feature labeling
• Basic Editing