There is a directory of github projects that use Fortran: https://github.com/Beliavsky/Fortran-code-on-GitHub

I'll add that it's well suited to modern AI inference and several projects exist, e.g.

https://github.com/nlpodyssey/rwkv.f90

https://github.com/certik/fastGPT

https://github.com/rbitr/llm.f90 (disclaimer, mine)