GIS is a supportive information system where the data has a geographical dimension, so that these can be related to a specific place on the world.
Quantum GIS (often abbreviated QGIS) is a user-friendly geographic information system that runs on Windows, Mac OS X, Linux, and Unix.
QGIS supports vector, raster, and database formats.
Quantum GIS has the following characteristics:
Quantum GIS supports the following formats:
Quantum GIS screenshots
You can free download Quantum GIS 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.