There is also LFortran, an interactive Fortran compiler: https://lfortran.org/ https://lfortran.org/ Which has multiple backends, besides the default LLVM one

There is also LFortran, an interactive Fortran compiler: https://lfortran.org/ https://lfortran.org/ Which has multiple backends, besides the default LLVM one, it also has a C++ backend (to translate Fortran projects to a readable C++), and once MLIR matures, we'll add an MLIR backend also. (I am the original author.)