You can load up to 4 data files simultaneously to view them.

Good for – Learning terrain analysis, quick data inspection, basic measurement. Not good for – Professional map export, large dataset editing, advanced geoprocessing.

Compared to QGIS (a completely free, open-source GIS), Global Mapper 17 Free is less powerful but far more user-friendly. QGIS requires a steeper learning curve and occasional plugin troubleshooting. Conversely, Global Mapper’s interface is clean and responsive, even on modest hardware. For someone who just needs to measure a polygon, check elevation profiles, or convert a single file format (with limitations), Global Mapper 17 Free wins on simplicity. However, for serious cartography or data editing, QGIS or purchasing the full Global Mapper is necessary.