meshio

meshio is a Python library for reading and writing various unstructured mesh formats, facilitating smooth conversion between them. It supports a wide array of formats including Abaqus, ANSYS msh, Gmsh, STL, VTK, XDMF, and many others. Currently at version 5.3.5, meshio is actively maintained with regular updates and requires Python 3.8 or newer. It can be used both as a command-line tool for conversions and as a Python API for programmatic mesh manipulation.