Quantum GIS (QGIS) is a Geographic Information System (GIS) built for Linux/Unix. QGIS supports vector, raster, and database formats. Some of the major features include: 1. Support for spatially enabled PostGIS tables 2. Support for shapefiles, ArcInfo coverages, Mapinfo, and other formats supported by OGR 3. Raster support for a large number of formats 4. Identify features 5. Display attribute tables 6. Select features 7. GRASS Digitizing 8. Feature labeling