[wolvesechoes]

There is Classic Flang, there is New Flang (part of LLVM tree), there is LFortran, there is Intel's ifx (also based on LLVM) and Nvidia's nvfortran (also based on LLVM, I think). And maybe even more.

Fortran ecosystem is actually more prolific, at least in terms of toolchains, including proprietary ones, than most of more popular languages.

Digression, but people sometimes forget that there is whole world outside of Python or JS, and that GitHub Stars or ShowHN posts do not easily translate to real world usage.

[pklausler]

Today, there are at least 9 production-level surviving Fortran compilers (GNU Fortran, IFX, nagfor, nvfortran, XLF, Cray/HPE's ftn, Fujitsu's frt, old Flang-based Arm/AMD, and flang-new). This situation has advantages and disadvantages for our users. Their Venn diagram of equivalently implemented features is very much not a circle, and portability across compilers is really tough. The ISO standard is hardly clear and doesn't have a test suite or reference implementation, so it's been a very challenging task to make flang-new as easy to port existing codes to as possible.