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Useful Open Source Tools

A number of people working in System Dynamics find R from the R project to be very useful. It is general-purpose software for doing statistical analysis and graphing of data.

Simulating System Dynamics Models in Python: This project is a simple library for running System Dynamics models in python, with the purpose of improving the integration of Big Data and Machine Learning into the SD workflow. PySD translates Vensim or XMILE model files into python modules, and provides methods to modify, simulate, and observe those translated models.

There are a large number of open-source tools available for Vensim. Further details are on the website at