The program's installer files are commonly found as hysys.exe, cmd.exe, HYSYS31.exe, HySysMDI_e.exe, Hysys_3.exe, RunAsDate.exe, rundll32.exe, Time stopper.exe or winhlp32.exe etc. The most popular versions of the software 21.0, 20.0 and 7.3. Also the software is known as 'HYSYS', 'Aspen HYSYS 2006', 'Aspen HYSYS 2004'.