New !
Vensim 5 is now released. See the Read
Me
notes here.
Vensim Simulation Software
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.
Comparison Chart for different Vensim
configurations
Documentation available on this website
Vensim PLE
Vensim PLE (Personal Learning Edition) is software
that gets you started in system dynamics modeling and is free for educational
use and inexpensive for commercial use. Vensim PLE is ideal for
classroom use and personal learning of system dynamics.
Vensim PLE Plus
Vensim PLE Plus bridges the gap between the
inexpensive (or free) PLE and our
higher configurations. PLE Plus is fully featured for its price
point and includes data connectivity, multiple views, Monte Carlo sensitivity simulations, game simulations, and the new model-user interface (Input and Output Controls).
PLE Plus can be purchased by credit card on our secure
sever.
Vensim Professional, and DSS
Read the Vensim Brochure. Vensim Professional
is what is needed for managing large and mode complicated models. It provides Causal TracingTM of structure and
behavior, and has Monte Carlo sensitivity, optimization and subscripting (array) capabilities.
Vensim DSS adds an interface development tool for creating management flight
simulators, external functions and macros, compiled simulations, and more.
Model Reader
The Vensim Model Reader is free software which
allows you to publish models constructed with Vensim and distribute them to
other people. Your model and the Vensim model reader can be copied and
passed to as many people as you want, giving people access to your model without
their needing to purchase Vensim. Demonstration Program
The Vensim Demonstration features a tour of Vensim,
includes several models with flight simulator interfaces, and contains the
Vensim development environment for modeling, along with some sample models.
Molecules
The Molecules software is used for constructing
system dynamics models from "chunks" or molecules of system dynamics
structure. This software is a collaborative effort among a number of
authors.
Venapps
Custom Vensim applications (flight simulators and other interfaces to models)
can be developed with the Venapp builder, or in a
programming language such as Visual Basic, C, C++, Visual C++, Delphi, Excel, and multimedia authoring
tools, or in Sable
(below).
Ventana Systems UK Ltd. — Sable
Developed by Ventana Systems UK
Ltd., Sable
is a programming environment used in creating application interfaces for Vensim,
similar to the Venapp builder.
Sable has a number of features which make it unique and useful. You can
program interfaces that run over intranets or the internet.
Online Documentation
Vensim documentation available online
includes installation instructions, Read Me notes, Vensim PLE & PLE Plus User's Guide, and
the Molecules guide.
Technical Highlights
Vensim contains many industry-leading technical advances in continuous
simulation technology. Read more about:
