OpenSees 2.3.2 Released
Version 2.3.2 of the OpenSees binary is now available for download. Here is the change log.
Discovering OpenSees
The next seminar in the web-based Discovering OpenSees: Surfing the waves of OpenSees learning series will occur November 17, 2011. This session is titled: OpenSees and Output and will occur on November at 4:30 PM Pacific Time. For more information about registration for this event can be found here
OpenSees in the Clouds!
OpenSees 2.2.2 is now available for use to all on NEEShub through the OpenSeesLab tool. For those of you with large models or many runs to perform, the machines on which this tool runs is very very very fast.

I have posted a YouTube video showing how to perform an OpenSees simulation using this tool. An improved version will be available soon. The OpenSees GUI applications, BuildingTcl and OS Navigator, are also available to run.

Try them out, registration and use of the machines are free!

Welcome
Welcome to the website for OpenSees, a software framework for developing applications to simulate the performance of structural and geotechnical systems subjected to earthquakes.

The goal of the OpenSees development is to improve the modeling and computational simulation in earthquake engineering through open-source development.

OpenSees is under continual development, so users and developers should expect changes and updates on a regular basis. In this sense, all users are developers so it is important to register. More information on Open Source is available.

The development and application of OpenSees is sponsored by the Pacific Earthquake Engineering Research Center through the National Science Foundation engineering and education centers program.

OpenSees has been selected as the simulation component for the George E. Brown, Jr. Network for Earthquake Engineering Simulation and has being sponsored by NEESit since 2004. Ongoing work to integrate OpenSees into the NEESit framework includes a web-based portal for simulation services, access to the NEESit data repository, and a visualization tool.

More info...