The 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: https://www.atlassian.com/git/tutorials/comparing-workflows/forking-workflow For a brief introduction to using your new FORK we suggest: https://www.atlassian.com/git/tutorials/saving-changes