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Description
The Vulnerability Modellers Toolkit (oq-vmtk) is a Python library for regional seismic vulnerability and risk modelling. It provides a self-contained workflow — from ground motion processing and structural model compilation through nonlinear analysis to fragility and vulnerability function derivation, powered by OpenSeesPy. The toolkit is designed for earthquake engineers and model developers, who need a reproducible and standardised library of functions to integrate to their structural assessment workflows.
How to cite this work
If you make use of this work, please cite both the publication and the software.
Publication: Nafeh, A.M.B., Aljawhari, K., Ettorre, A., Silva, V., and Crowley, H. (2026). The OpenQuake Vulnerability Modellers' Toolkit: An Open-Source Toolkit for Earthquake Vulnerability Modelling Applications, Earthquake Spectra, in press
Software: Nafeh, A. M. B., Aljawhari, K., Ettorre, A., Silva, V., & Crowley, H. (2026). OpenQuake Vulnerability Modeller's Toolkit (oq-vmtk) (v1.1.0). https://doi.org/10.5281/zenodo.17524871
Available Versions
The Open Repository can be accessed by clicking on the link on the right. If your use case does not comply with the license terms, a license can be requested by clicking on the "License Request", where a specific agreement will be provided, depending on the use case.
License information
There are no restrictions on the use (commercial or otherwise) of the Vulnerability Modeller's Toolkit (oq-vmtk). The source code of the software is available under a GNU Affero General Public License v3.0 license, which requires:
Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license.
Copyright and license notices must be preserved.
Contributors provide an express grant of patent rights. When a modified version is used to provide a service over a network, the completed modified version must be made available.
Any deviation from these terms incur in license infringement.
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