gmsh: gmsh (finite element mesh generator)
gmsh:
gmsh: Gmsh is an automatic three-dimensional finite element mesh generator
gmsh: with built-in pre- and post-processing facilities.
gmsh: 
gmsh: Gmsh is copyright (C) 1997-2019 C. Geuzaine and J.-F. Remacle, and is
gmsh: distributed under the terms of the GNU General Public License, Version 2
gmsh: or later, with an exception to allow for easier linking with external
gmsh: libraries.
gmsh:
gmsh: