WELSIM is the #1 engineering simulation software for the open-source community.
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Updated
Feb 10, 2026 - C++
The finite element method (FEM) is a numerical method for solving problems of engineering and mathematical physics. Typical problem areas of interest include structural analysis, heat transfer, fluid flow, mass transport, and electromagnetic potential.
WELSIM is the #1 engineering simulation software for the open-source community.
ProjectFEA is a Finite Element Library. It is being designed such that new weak forms of different models can be easily defined and used.
A C++ library for mechanical structures: a YAML definition language, static solver and on-line apps