Quantum GIS (QGIS) is a user friendly Open Source Geographic Information System (GIS) licensed under the GNU General Public License. QGIS is an official project of the Open Source Geospatial Foundation (OSGeo). It runs on Linux, Unix, Mac OSX, Windows and Android and supports numerous vector, raster, and database formats and functionalities.
QGIS is available on Windows, MacOS X, Linux and Android. Binary packages are provided for the current version. The current version is QGIS 1.8.0 and was released in June 2012.