# Modern Fortran software in routine usage

**URL:** <https://fortran-lang.discourse.group/t/modern-fortran-software-in-routine-usage/2061>\
**Category:** Uncategorized\
**Created:** [October 13, 2021, 4:12am UTC](https://fortran-lang.discourse.group/t/modern-fortran-software-in-routine-usage/2061 "2021-10-13T04:12:50Z")\
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**Author:** ![ivanpribec](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/ivanpribec/32/3290_2.png) [@ivanpribec](https://fortran-lang.discourse.group/u/ivanpribec)\
**Post date:** [October 13, 2021, 6:12pm UTC](https://fortran-lang.discourse.group/t/modern-fortran-software-in-routine-usage/2061/9 "2021-10-13T18:12:25Z")

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There are probably dozens of CFD and structural analysis codes in Fortran that are still actively developed and used. Just a few examples:

- [FUN3D](https://fun3d.larc.nasa.gov/) (NASA)
- [HYDRA](https://www.mpls.ox.ac.uk/research-section/the-hydra-code-rolls-royces-standard-aerodynamic-design-tool) (Rolls-Royce)
- [AVBP](http://www.cerfacs.fr/avbp7x/) (Cerfacs)
- [Alya](https://compbiomedeu.github.io/applications/Alya/Alya.html) (Barcelona Supercomputing Center)

These are probably all a mixture of both fixed-form F77 codes, and also Fortran 90+ codes. A few more large-scale Fortran codes routinely run at HPC facilities in Germany can be found in one of my earlier posts: [High-Q Club at Jülich Research Centre](https://fortran-lang.discourse.group/t/high-q-club-at-julich-research-centre/846)

I’m pretty sure most national weather services rely upon Fortran codes (including for the assimilation of satellite data?). Maybe @milancurcic can name a few.

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