Use, share and enhance GEM's tools and resources

Below you find an overview of all GEM products that are being released with v1 of the OpenQuake Platform or are under development. Products are divided into the following categories:

- Software / Tools 
- Data
- Models
- Best Practice & risk assessment approaches
- Risk Information 

Please be aware that this overview is subject to change over time.

OpenQuake Platform

An integrated platform for risk assessment

The OpenQuake Platform brings different most of GEM products together, by allowing for use inside the platform or by providing links to products that should be used or downloaded from other locations. It is a web-based GIS platform that allows you to:

  • visualize, explore and manipulate GEM’s datasets, tools and risk information
  • access the OpenQuake Engine for light hazard and risk calculations
  • access and download offline tools and other resources
  • contribute, share and discuss data, new findings and results with the GEM community


Register to the platform and take your own tour

We are working on supporting materials and documentation to ease use of the platform, sharing of risk information and approaches. If you have questions or ideas on how things can be improved, please join our google usersgroup and post them.


The code of our software is open and available from our repositories on Github

OpenQuake Engine - GEM’s state-of-practice software for earthquake hazard and risk modeling at any scale.

  • Carry out small calculations through the OpenQuake Platform, using your own files
  • Request an account on OATS for small calculations, working with a command line interface. Ample documentation is available to support you. 
  • If you want to use the full capability of the engine, you can install the latest version locally on a server, cluster or laptop
  • The engine is being used by a great variety of companies, national and local institutions responsible for risk assessment, as well individual scientists and professionals.
  • Several papers have been published about the engine.
  • The hazard part of the engine has been externally reviewed, the risk part will be reviewed in 2015


Integrated Risk Modelling Toolkit

A comprehensive toolkit that works as a plugin to the QGIS software, with two main functions: 1. to develop indicators of social and economic vulnerability or resilience, 2. to combine measures of physical risk with the above indicators to obtain integrated risk estimates.

  • Look for SVIR in the QGIS plugin directory, download and install the latest version
  • You can upload completed integrated risk models to the OpenQuake Platform to share them with the community
  • The OpenQuake Platform features a viewer for Social Vulnerability Indicators. Mid-2015 it will be possible to also visualise integrated risk models in the viewer.

Model Development and Post-Processing Tools

Tools developed by GEM scientists (Secretariat and partners) to support model development. 

Hazard Modeller’s Toolkit (hmtk)facilitates creation of PSHA input models

Ground Motion ToolkitPython and OpenQuake-based Toolkit for Analysis of Strong Motions and Interpretation of GMPEs:

Risk Modeller’s Toolkit (rmtk)tools for engineers to create fragility and vulnerability input models needed to run risk calculations with the OpenQuake Engine. The rmtk is being finalized as we speak.


Data Capture Tools

Inventory Data Capture Tools: a set of tools and accompanying user protocols to enable users to collect building information pre and post earthquake and turn them into datasets.

Fault Capture Tool: tool and guidelines to capture new data on active faults anywhere in the world; integrated into the OpenQuake Platform.

Physical Vulnerability Data Suite: tool to explore and contribute physical vulnerability functions;  integrated into the OpenQuake Platform


Knowledge Sharing & Data Facilitating Apps

TaxT: Tool to facilitate use of the GEM Building Taxonomy

Supporting Tools

There are various tools that can help you in using the OpenQuake Engine and other GEM products. For example NRML converter tools, tools for input and output conversion. These are prototypes or are of experimental nature, and can be found on Github’s Science Tools Repository


Experts from around the globe have worked on developing global uniform datasets that can reliably support your earthquake hazard and risk analysis. They can be explored through the OpenQuake Platform and combined to obtain new insights into hazard and risk. Some datasets can be downloaded in their entirety.

Check for related documents and data in the sidebar of the database in the platform.

We would like to hear from you how (else) you would like to use the data, and if you have suggestions on how we can improve use in the platform. We are also interested to collaborate with you on data(sets). Do contact us!


Input models for seismic hazard and physical risk calculations

A repository of earthquake hazard, physical risk and integrated risk models at regional, national, sub-national and local level is being developed. These models are either OpenQuake implementations of existing models, generated through external programmes with whom we collaborate, or are models created through projects that are directly managed by the GEM Foundation.

  • Learn about and download the hazard models that we currently share with the community, through this wiki ( It currently features a series of OpenQuake Implementations and models of external partner programmes.
  • The following GEM models are under development or scheduled:
    • A hazard, physical risk and integrated risk model for South America, and detailed models for Quito, Lima and some other cities, collaboratively developed as part of the SARA project 
    • A hazard, physical risk and integrated risk model for Eastern Africa, including detailed models for Addis Ababa, as part of a project together with AfricaArray, funded by USAID (see also

Best practice & risk assessment approaches

Ground Motion Prediction Equations – series of technical reports that facilitate GMPE selection in various contexts; download the main report here, other reports can be found on GEM Nexus

GEM Building Taxonomy - a comprehensive global classification scheme for buildings, for capturing all different building types that exist around the globe with a common language technical reports; use the main technical report, the report on the glossary or go to the GEM Nexus page for online use of the taxonomy and glossary. See also above information on the TaxT tool.

Risk and Resilience Scorecard an innovative approach for community-based measurement of resilience, which has been tested in Nepal. Supporting documentation on the methodology are under development.


Risk Information

There are different risk information products inside the OpenQuake platform:

The hazard and risk data explorer - here you can explore maps, curves and other results calculated with the models mentioned above. You can download them in a several different formats. At present there are only hazard results.

Maps and Layers

- All datasets and results of single calculations are represented as layers ( in the platform. A layer can be downloaded in a great variety of formats for further use.

- You can create custom maps ( by combining several layers, or import own data layers. You can decide to share these maps with the community or not.

- All layers come with metadata, which include the person / organization who developed the layer and could include also the license.

- All layers and maps can be rated and commented upon by the community, which facilitates comprehension on the quality of a certain map.