QGIS - A leading free, open source desktop GIS program. Create, edit, visualize, analyze and publish geospatial information. Runs natively on many operating systems, including Windows and Mac.
Esri ArcGIS Pro - The leading commercial software for desktop GIS mapping and analysis. Licenses are available to all UC Berkeley students, faculty, and staff. Notes: 1) ArcGIS only runs natively on Windows machines. 2) We will no longer have licenses for ArcMap/ArcGIS Desktop after June 2024!
If you require offline access, the GIF (Geospatial Innovation Facility) provides information and a form for requesting a license.