GIS Paketleri

ESRI (Environmental Systems Research Institute Inc.) makers of ArcINFO, ArcView, ArcGIS, etc. http://www.esri.com
Intergraph, makers of GeoMedia http://imgs.intergraph.com
GRASS (Geographic Resources Analysis Support System) Open Source, http://grass.baylor.edu
PCI Geomatics, makers of Geomatica. http://www.pcigeomatics.com

ESRI (Environmental Systems Research Institute Inc.) makers of ArcINFO, ArcView, ArcGIS, etc. http://www.esri.com