Below is a listing of software so that you can begin your GIS research!
- QGIS: User-friendly Open Source Geographic Information System (GIS) licensed under the GNU General Public License. QGIS is an official project of the Open Source Geospatial Foundation (OSGeo). It runs on Linux, Unix, Mac OSX, Windows, and Android and supports numerous vector, raster, and database formats and functionalities.
- Google Earth Engine: Earth Engine combines a multi-petabyte catalog of satellite imagery and geospatial datasets with planetary-scale capabilities.
- Google Earth: Google Earth is a computer program, formerly known as Keyhole EarthViewer, that renders a 3D representation of Earth based primarily on satellite imagery.