Absoft Fortran Compilers are set of Fortran compilers for Microsoft Windows, Apple Macintosh, and Linux produced by Absoft Corporation. The compilers are source code compatible across platforms. * Absoft Pro Fortran on 64-bit platforms supports both 32 bit and 64 bit executables; the user selects which format that the compiler will produce. * Linux compilers are available in either 32-bit or 64-bit versions. The 32-bit version produces only 32-bit executables.