Skip to content


Repository files navigation

OpenSees Source Code Repository

This git repository contains all revisions to OpenSees source code since Version 2.3.2.

Older revisions of the code are available upon request.

If you plan on collaborating or even using OpenSees as your base code it is highly recommended that you FORK this repo to your own account and work on it there. We will not allow anybody to write to this repo. Only PULL requests will be considered. To fork the repo click on the FORK at the top of this page.

For a brief outline on forking we suggest:

For a brief introduction to using your new FORK we suggest:


The documentation for OpenSees is being moved to a parellel github repo:

The documentation (in its present form) can be viewed in the browser using the following url:

Build Instructions

Steps to build OpenSees on Windows, Linux, and Mac:

Modeling Questions

Issues related to modeling questions will be closed. Instead, post your modeling questions on the OpenSees message board or in the OpenSees Facebook group.