The Global Earthquake Model (GEM) Foundation is facilitating global seismic risk assessment by providing open-source software, datasets, models, tools, and expertise. The OpenQuake engine allows probabilistic and scenario-based earthquake risk analysis. GEM has developed global population and exposure datasets, fragility models, and has conducted probabilistic seismic hazard and risk analyses to estimate earthquake impacts and losses around the world. GEM is making these resources openly available to support risk assessment and mitigation efforts globally.