Users with a valid license for older versions like 9.x can upgrade to the latest version for approximately $125.00 .
A free, open-source chemical process simulator. It includes its own property packages and can integrate with CoolProp to provide RefProp-like functionality within a full plant simulation environment. A Note on "Free" Downloads refprop 91 free
A fully updated user interface and better support for 64-bit systems. Users with a valid license for older versions like 9