https://www.freecadweb.org/?lang=ja
https://www.youtube.com/channel/UC_9HwDkwxllq5lFGkYBIH9g
http://www.calculix.de/
https://mecway.com/
https://www.openfoam.com/
https://www.paraview.org/
https://en.wikipedia.org/wiki/List_of_finite_element_software_packages