Compilers that run on Windows for intel CPU's.
The changes are rapid and information here may not be up to date.
Fortran and C/C++ Compilers

GNU Compilers
The
GNU
project is developing approvable quality of C/C++ and Fortran
compilers.
How to run them on Windows will be described below.
- WSL (Windows Subsystem for Linux)
On the current version of Windows 10 (64-bit), the
WSL
(Windows Subsystem for Linux) is available.
By installing a distribution such as Ubuntu, bash and other
command-line tools will be used.

Commercial Compilers
Below is a list of major commercial compilers.
Numerical Modeling Language

GNU Octave