gfortran is a popular and reliable choice for a Fortran 77 compiler on Windows 10 64-bit. Here's how to download and install it:
gfortran -std=legacy -o program.exe mycode.f fortran 77 compiler for windows 10 64-bit free download
The most popular free, open-source solution for Windows 10 is . To get it, the easiest route is through the MinGW-w64 project, which brings GCC (GNU Compiler Collection) to Windows. How to download and install: gfortran is a popular and reliable choice for
: It is robust and widely documented, though it requires some familiarity with the command line or an IDE. is actively maintained
It is not "Fortran 77 only" but supports the F77 standard perfectly, is actively maintained, runs natively on 64-bit Windows, and is completely free.