It's open source and useful for initial designs.

the best part about dwsim is that it has provided us a software package with different machineries that is used in the simulation process of the industries easy to use drag and drop one thing that really gives dwsim an upper hand is that low storage requirement and drag and drop system.

1) DWSIM's UI is simpler than other Proprietary Simulation Software, helping learners focus more on the engineering aspect rather than wasting time learning the software UI. 2) Software codes are available on GitHub. If students want to learn the algorithm behind any models, it is available there. You can modify it at your convenience and use it in DWSIM. 3) The developer (Daniel Medeiros and Team) is highly responsive; whenever I face a problem, I get a solution within a day or two. 4) Bugs are fixed very quickly. 5) Custom models can be built inside Python, which is very useful for engineers with only basic coding knowledge. 6) Missing compounds can be created using an online database. The same can be done for interaction parameters. 7) All facilities like optimization, sensitivity study, and thermodynamic diagrams can be developed very easily. 8) Advanced thermodynamics, dynamic operators, neural network operations, and cost calculators are also available and easy to use. 9) CAPE-OPEN components can be used inside DWSIM.