The Mono Edition of DWSIM is a slightly less featured version of
DWSIM, but that's for a good reason: you can now run DWSIM on Linux
machines using Mono.
Both builds (.NET and Mono) come with a couple of new features:
scripting support for pre- and post- Unit Op calculations and a model
for Shell and Tube Heat Exchanger rating. I also noticed some problems
with the IO Flash algorithm and added a checkbox to disable "Fast
Mode" for it. It just enables the calculation of a damping factor on
each iteration to improve convergence robustness.