QGIS - QGIS is a desktop geographic information system, or GIS.
GRASS GIS - GRASS GIS is a free Geographic Information System (GIS) software used for geospatial data management and analysis, image processing, graphics/maps production, spatial modeling, and visualization.
TatukGIS Editor - GIS mapping and data editing application with built-in scripting environment and Free viewer
SAGA GIS - SAGA - System for Automated Geoscientific Analyses - is a Geographic Information System (GIS)...
MicroImages - MicroImages is the development team behind TNTgis software. We work with consultants, resellers and clients to offer geospatial mapping support. Call us now!
gvSIG - gvSIG Mini Maps allows you to browse and navigate with GPS a full set of free on/offline maps from...