Many national and regional supercomputing centers (like XSEDE in the US or various European grids) have Gaussian 16 pre-installed. Researchers can apply for "allocation time" on these clusters, allowing them to run Gaussian jobs for free or for a subsidized research grant. 3. Student Pricing

These files often contain malware, ransomware, or spyware that can compromise your data.

Most major universities and research institutions hold site licenses for Gaussian. If you are a student or faculty member, check with your IT department or Science faculty. You can often download the software through your university’s internal portal or access it on school-managed clusters at no direct cost to you. 2. High-Performance Computing (HPC) Clusters

Gaussian 16 is the latest version in the Gaussian series—a powerhouse in the world of computational chemistry used by chemists, chemical engineers, and physicists worldwide. Because it is a proprietary, professional-grade software, finding a legitimate "free download" is a common but tricky search.