KADAS Albireo is a free and open source mapping application for Linux and Windows. It is based on QGIS and targeted at non specialized users. It comes with enhanced functionalities in drawing, measuring, terrain analysis. You can easily add geometries, pins, geo referenced pictures and other symbols in the map. The main features are terrain analysis, integrated GPS geolocation support and GPX waypoint and route editor, multiple map views, 3D globe view, map grids, integrated geodata catalog and more.