Calculix: A Free Software Three-Dimensional Structural Finite Element Program
Summary
CalculiX is a free/open-source 3D structural finite element package with a built-in pre/post-processor, a solver supporting linear/non-linear, static/dynamic/thermal analyses, and cross-format data exchange with Abaqus, Nastran, and OpenFOAM. The page highlights platform compatibility (Unix/Linux/IRIX and Windows), a jet-engine case study, and a GPL license, underscoring its research and development provenance.