Geographic Resources Analysis Support System (GRASS) is a free and open source geographic information system (GIS) suite that is released under the GNU Public License. Its official web site is https://grass.osgeo.org.
Portable GRASS GIS for MS Windows
There are two different versions of portable GRASS GIS for MS Windows:
- Latest daily build without OSGeo4W dependency and Python 3 (smaller download)
- Latest daily build with OSGeo4W including Python 3
Both versions don’t require administrative rights to install.