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NOTE: This repository contains the source code of OpenSim Java GUI 4.x and cannot be used to build OpenSim 3.x or earlier.

OpenSim is software that lets users develop models of musculoskeletal structures and create dynamic simulations of movement.

More information can be found at our websites:

• OpenSim website, in particular the support page.
• SimTK project website.

This repository does not include source code for the OpenSim core API. The source code for the OpenSim core API can be found here.

Download and Setup

You can download OpenSim GUI from the simtk website:

• OpenSim GUI
  • Download page
  • Scripting in the GUI
• Looking for help?
  • Ask a question
  • Submit an Issue

Documentation

OpenSim's documentation can be found in our Documentation website.

Examples and Tutorials for OpenSim can be found in the Examples and tutorials website. These tutorials move from introductory to more advanced, so you can learn OpenSim in a progressive way. Additional OpenSim-based tutorials, homework problems, and project ideas are available on the Biomechanics of Movement classroom site.

Releases

This repository contains releases for OpenSim GUI 4.x. You can find all of the OpenSim's releases in the Releases page of this repository.

Build instructions

We provide scripts to build OpenSim on Windows, macOS and Linux (Ubuntu and Debian). The instructions to download and execute the scripts can be found in the Build Instructions page of this repository's wiki.

Disclaimer

Due to the small development team working on the GUI, we do not provide support for building or altering the OpenSim GUI source code. The provided build instructions may get out of date occasionally. The defacto instructions are those included/used by the Continuous Integration (CI) build scripts. See the OpenSim Confluence Wiki for additional information.

Contribute

There are many ways in which you can participate in this project. For example:

• Report bugs and request features by submitting a GitHub Issue.
• Ask and answer questions on our Forum.
• Review and test new Pull Requests.
• Review the Documentation and the Wiki by reporting typos, confusing explanations and adding/suggesting new content.
• Fix bugs and contribute to OpenSim GUI's source code by creating a Pull Requests.

Please, read our Developer's guide, [Developer's Guidelines] and our Code of Conduct before making a pull request.

License

Licensed under the Apache License, Version 2.0. See the full text of the Apache License, Version 2.0 for more information. This license makes OpenSim suitable for commercial, government, academic, and personal use.

Third-party components have their own licenses. see our Notice, and Acknowledgements webpages for more information.

The OpenSim GUI's visualizer uses JxBrowser, which is proprietary software. The use of JxBrowser is governed by JxBrowser Product Licence Agreement. If you would like to use JxBrowser in your development, please contact TeamDev.

How to acknowledge us

Acknowledging the OpenSim project helps us and helps you. It allows us to track our impact, which is essential for securing funding to improve the software and provide support to our users (you). If you use OpenSim, we would be extremely grateful if you acknowledge us by citing the following paper:

Seth A, Hicks JL, Uchida TK, Habib A, Dembia CL, et al. (2018) OpenSim: Simulating musculoskeletal dynamics and neuromuscular control to study human and animal movement. PLOS Computational Biology 14(7): e1006223. https://doi.org/10.1371/journal.pcbi.1006223

If you use plugins, models, or other components contributed by your fellow researchers, you must acknowledge their work as described in the license that accompanies each of these files.

Funding

The OpenSim project is currently supported by the following:

• United States National Institutes of Health (NIH)
  • Mobilize Center (P41 EB027060)
  • Restore Center (P2C HD101913)
• Wu Tsai Human Performance Alliance

Past funding includes the following grants and contracts:

• United States National Institutes of Health (NIH)
  • Simulation of Biological Structures (Simbios; U54 GM072970)
  • Simulation in Rehabilitation Research (NCSRR; R24 HD065690, P2C HD065690)
  • Mobilize Center (U54 EB020405)
• United States Defense Advanced Research Projects Agency (DARPA)
  • Warrior Web (W911QX-12-C-0018)