Quantum GIS - Open Source GIS

"Quantum GIS (QGIS) is 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. "

Gratis & Open Source. Misschien wel de moeite om eens te proberen.