: A powerful, open-source chemical process simulator that is widely used as a free alternative to HYSYS. COCO Simulator : A free, CAPE-OPEN compliant simulation environment.
If you are looking for documentation or papers that utilize Aspen HYSYS (including older versions like 7.3) for process modeling, consider these resources: Tutorials & Coursework Aspen Hysys 7.3 Torrent
If you cannot gain access to Aspen HYSYS, several open-source and free simulation tools offer similar capabilities for steady-state modeling: : A powerful, open-source chemical process simulator that
It was known for an easy-to-use flowsheet environment that many older engineers still prefer. : A powerful