Last Updated on March 30, 2026
OpenSees (the Open System for Earthquake Engineering Simulation) is an object-oriented software framework.
OpenSees allows users to create finite element applications for simulating the response of structural and geotechnical systems subjected to earthquakes.
This is free and open source software.
Website: opensees.berkeley.edu
Support: GitHub Code Repository
Developer: Frank McKenna, Gregory L. Fenves, and other contributors
License: GNU General Public License v3.0
OpenSees is written in C++. Learn C++ with our recommended free books and free tutorials.
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