QGIS is available on Windows, MacOS X and Linux. Binary packages are provided for the current version. The current version is QGIS 1.7.3 and was released on 15 December 2011.
Quantum GIS is open source software available under the terms of the GNU General Public License meaning that its source code can be downloaded through tarballs or the git repository.
For testing and learning purpose, we also provide a sample dataset, which contains collections of data from different sources and in different formats, like GPS data, a small GRASS location, GeoTiff, ERDAS Img, Shape or GML formats.
