The OpenSees Community

Same for me. All files are inaccessible. Be it *.tcl files or pictures.

Dear Frank, I am very pleased to hear that.

Unfortunately, UC Berkeley told me the opposite: I would need a licence to use OpenSees in my engineering office, provided I get paid to use it. This is the case, for example, when I run a simulation with OpenSees as part of a project.

I am a self-employed engineer and would love to use OpenSees in my engineering office. However, the response I received from UC Berkeley prevents me from using OpenSees. The licence fees they want to charge me for using OpenSees are excessive. I could afford a commercial version of SAP2000 for such a price.

I would really appreciate any feedback or support from your side on this issue.

However, PEER is not the copyright owner. It is "The Regents of the University of California" as stated in the copyright. Contact them and you will get a different answer. PEER is probably not aware of the recent changes. That is part of the response I received from Berkeley: "This license agreement has been evolving with the market, for example, with the advent of commercializing OpenSees in the form of a subscription SaaS." And moreover: "The update now requires the license. If you are earning revenue from the use of OpenSees then that is a commercial use of OpenSees and you therefore need the license."

Some months ago I contacted UC Berkeley (https://ipira.berkeley.edu/our-team#OTLStaff) to clarify these issues (e.g. what is internal use?). I was planning to use OpenSees as simulation software in my engineering office. After an exchange of several e-mails and clarifications, they agreed that using OpenSees commercially (i.e. in my engineering projects) does not require a license.

Unfortunately, on August 1, 2022, I received an e-mail from them, that UC Berkeley has updated its OpenSees non-exclusive commercial-use license to include project based use of OpenSees. Based on this update, a license is required when earning revenue from the use of OpenSees!

In other words, the update now requires a license when using OpenSees on commercial engineering projects. That's the official response I got from UC Berkeley.

Unfortunately, Berkeley changed the license agreement recently. Now, one needs to obtain a commercial license when earning revenue from the use of OpenSees.

The source Code is available on GitHub, just Google GitHub and Opensees, or: https://github.com/OpenSees

Are you still facing the Problem? I am trying to do modal Analysis on a 3D Model - but somehow it doesn't work with Fiber sections.