
Gmsh is an open-source 3D finite element mesh generator with built-in pre- and post-processing facilities. Designed to offer a simple yet powerful environment for mesh generation and analysis, Gmsh includes a scripting language for specifying geometry, meshing, solver interfaces, and post-processing. It allows users to efficiently create complex 3D geometries and refine meshes for various simulation needs. Gmsh supports a range of output formats, and its capabilities can be extended through plugins and custom scripts.