DWSIM
Open-source CAPE-OPEN compliant chemical process simulator for steady-state and dynamic simulations. Supports flash calculations (VLE/LLE/VLLE), thermodynamic property packages (Peng-Robinson, SRK, NRTL, UNIQUAC), and unit operations.
Citation
Wagner, D. "DWSIM - An Open-Source Chemical Process Simulator" https://dwsim.org/