Once installed, please make sure that gfortran is accessible to you. The gfortran Fortran compiler is compatible with MS Windows XP, 2000, Vista, MS Windows 7 and 8. The self-install file for the gfortran compiler can be downloaded as free software from, and is available in 32bit and 64bit modes on MS Windows operating systems. While we used to recommend the so-called g95 Fortran compiler, we now strongly recommend that you use gfortran 4.6.3, or even better its upgrade to 4.8.1 and above. The version 4.6.3 of the same gfortran compiler is the first version to be released for various MS Windows operating systems (i.e.
