Watcom C/C++ (1989) 5 DOS OS2 Windows

The Watcom C/C++ is a powerful compiler for DOS, Windows, and OS/2. Its key selling point was superior cross platform support. It supported DOS, extended DOS 32-bit, Win16, Win32, and OS/2. Notably, it was used to produce the video game DOOM as a 32-bit DOS extended program.

• 7.0
• 8.5
• 9.0
• 10.0
• 10.5
• 10.6
• OpenWatcom

Watcom Fortran (1995) 0 Windows

Watcom Fortran is a powerful Fortran compiler for Windows that includes an integrated development environment, debugger, and profiler.

• 10.5
• 10.6
• 11.0

Watcom Pascal (1988) 1 DOS

Watcom Pascal is a Pascal interpreter produced by Watcom. The original Watcom Pascal products were called the Waterloo Pascal compiler and the Waterloo microPascal interpreter. For a time, it competed with Borland Turbo Pascal.

• 3.5