Sketching and simulating system dynamics models has never been more natural. Model is built on XMILE, the emerging SD model standard, so you can import and export your existing models with ease. (coming soon)
Model is based on XMILE, so you can easily open your existing models, or export models for analysis in other tools.
Helping to lower the barrier to entry of the field, all of this is available for free.
A simple, clean tool that allows you to create and edit traditional yet beautiful models.
The simulation engine and diagram-drawing code that powers Model is open source. It has been designed from the ground up to be easy to embed in ebooks and combine with other web technologies.
An example of a more traditional website that allows the exploration and manipulation of a XMILE-based SD model.