Vensim is used for developing, analyzing, and packaging high quality dynamic
feedback models. Models are constructed graphically or in a text editor.
Features include dynamic functions, subscripting (arrays), Monte Carlo
sensitivity analysis, optimization, data handling, application interfaces, and
much more.
Vensim PLE can be used for free, provided you use it for personal or educational purpose only. If you use it for commercial purpose you may install an evaluation version which is valid for 60 days.
