gvSIG

gvSIG is an interoperable GIS boasting thousands of users worldwide, from OSGEO. The vendor presents the solution as easy to work in a variety of formats, vector and raster files, databases and remote services. gvSIG Desktop is designed to be an extensible solution, allowing thus continually improving the software application and developing tailor made solutions. gvSIG is open source software, available under the GNU General Public License (GPL).