Leading Edge Simulation

JaamSim is a free and open source discrete-event simulation software which includes a drag-and-drop user interface, interactive 3D graphics, input and output processing, and model development tools and editors.

Available for Windows, OSX and Linux

License: JaamSim is Apache 2.0

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Drag & Drop

JaamSim is the first free open source simulation software to offer a drag & drop interface that rivals commercial simulation packages. A full palette of objects is provided for building process flow and system dynamics type models. Users can create custom palettes for their applications.

Fast & Scalable

JaamSim is many times faster than the commercial simulation software packages that offer a drag & drop interface and is scalable to much larger and more complex models. We have built models with as many as 40,000 active objects.


JaamSim has been in continuous development since 2002 as the foundation for simulation applications by a growing community of users.