Vensim PLE 6.0 beta

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. Ventana Systems also provides the Molecules software, for constructing system dynamics models from "chunks" or molecules of system dynamics structure.