ArcGIS is a suite of geographic information software developed by the American company Esri. It is one of the best known GIS products in the industry. ArcGIS can be found in the Nicolls 110 and Nicolls 113 Labs.
Google Earth / Google Earth Pro, although not able to provide much in terms of GIS manipulations, these products are nevertheless¸ very useful to quickly visualize areas and are good tools to use in conjunction with other more specialized software.
A free and open-source alternative to ArcGIS. If ArcGIS remains the reference for some niche applications, QGIS is generally considered lighter and more reliable.