The consultancies and vendors that actually do Fortran modernization work, and what each one specializes in. This is a general market overview, not a paid placement or an endorsement.
Fortran and HPC consulting, training, and refactoring
A consultancy focused specifically on Fortran and high-performance computing: training, performance and optimization work, and code refactoring, generally aimed at improving existing Fortran rather than replacing it.
Best for: Teams that want to keep their numerical codebase in Fortran and make it faster or more maintainable, not port it to another language.
Fortran modernization: integrate or rewrite
Specializes in modernizing legacy Fortran codebases via two distinct paths: integrating the existing Fortran directly with C, C++, or Python rather than replacing it, or a complete rewrite of the codebase, chosen based on the specific system.
Best for: Teams unsure whether to keep Fortran as a numerical core or replace it outright, since this vendor explicitly offers both paths.