Gmsh

Gmsh creates finite element meshes from parametric geometry and CAD models. Its graphical interface includes geometry editing, mesh generation and post-processing tools, with a command line for batch meshing.

This community package runs the official upstream Linux build unmodified. A separate Mesa GLU library supplies OpenGL utility functions.

The native file chooser can open and save files in Documents. To work in another directory, grant that directory with flatpak override --user --filesystem=/path/to/models info.gmsh.gmsh. Remove custom overrides with flatpak override --user --reset info.gmsh.gmsh.

External ONELAB solvers and text editors must be available inside the sandbox. Host-installed programs are not available. Network access for remote ONELAB clients is optional: flatpak override --user --share=network info.gmsh.gmsh.