Fortran Wiki
Open Watcom

Open Watcom is a project of the open source community to maintain and enhance the Watcom C, C++, and Fortran cross compilers and tools.

In 2003, the Watcom C/C++ and Fortran compilers were released as an open source project under a new name, Open Watcom.

Open Watcom is open source software, available under the Open Watcom Public License which allows free commercial and non-commercial use.