If you need process simulation software but cannot afford an enterprise Aspen license, consider these highly capable, legal avenues: 1. Official Academic Licensing

: Students can often access Aspen HYSYS through their university's academic partnership with AspenTech .

If you just need to learn process simulation, DWSIM is a fantastic, free, and open-source alternative. It performs many of the same calculations as HYSYS and is completely legal to use.

What specific are you trying to simulate?