I am hoping this open source FEM library will catch on : https://www.dealii.org/ https://www.dealii.org/. The deal in deal.II stands for Differential Equation A

I am hoping this open source FEM library will catch on : https://www.dealii.org/ https://www.dealii.org/. The deal in deal.II stands for Differential Equation Analysis Library. It's written in C++, makes heavy use of templates and been in development since 2000. It's not meant for solid mechanics or fluid mechanics specifically, but for FEM solutions of general PDEs. The documentation is vast, the examples are numerous and the library interfaces with other libraries like Petsc, Trilinos etc. You can output results to a variety of formats. I believe support for triangle and tetrahedral elements has been added only recently. In spite of this, one quirk of the library is that meshes are called "triangulations".