OpenRadioss was the open-source release (GNU AGPL, 2022) of Radioss, an industry-leading finite element solver used for crash, blast, and impact simulation. After acquiring Altair, Siemens has terminated the OpenRadioss initiative: the project website has been retired and the GitHub repository has been removed (now returning 404), not simply archived. This closure eliminates public access to the codebase that researchers, developers, and performance testers had been using for community-driven research and CPU benchmarking that previously avoided expensive proprietary licensing.
Siemens frames the move as a consolidation to accelerate innovation and provide production-grade support through Simcenter Radioss and a Radioss R&D program, directing users to corporate channels for simulation and research engagement. The decision drew sharp disappointment because it withdraws a notable open resource and disrupts ongoing benchmarking and community development workflows. In response, Rocky Linux developers and others have launched a community fork named OpenCourant to continue development, and some users are relying on locally archived binaries for the short term.
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