Watcom International Corporation was a software company, which was founded in 1981 by Wes Graham and Ian McPhee.
The first company started by Graham and McPhee was Structured Computing Systems, incorporated in 1974.
Then the software development company, WATCOM Systems Inc, started in 1981 with three full-time employees, but had been incorporated two years earlier as Waterloo Basic Enterprises Limited.
In the mid 1980s Watcom developed compilers for the Unisys ICON computers running the QNX operating system.
Doom, Descent, Magic Carpet, Grand Theft Auto, System Shock, Fast Attack, Atomic Bomberman, Duke Nukem 3D and Fallout are among well known games that were compiled with Watcom C and DOS/4GW.