The OpenQuake Engine is the Global Earthquake Model Foundation’s (GEM) state-of-the-art, free, open-source and accessible software collaboratively developed for earthquake hazard and risk modelling. It runs on operating systems such as Linux, macOS and Windows; and can be deployed on laptops, desktops, standalone servers and multi-node clusters.

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The source code for our software is openly available from a public repository - www.github.com/gem where live development of the code takes place. Our test-driven development environment approach allows external software developers to contribute and test our code. The OpenQuake Engine is fully supported with documentation and technical support.