From the History of a Safer World:  The proprietary Triconex operating system, the TSX, is the heart of the world's most successful industrial safety system.  Who wrote the TSX?  
The most critical function of the TSX is to guarantee the switching of the modules on a timely basis which provides the continuous reliablity of the Tricon controller.  Victor Torres, a Cornell graduate was one of the first 20 employees of Triconex  in 1984.  He wrote the original version of the Triconex operating system.  Jerry Cuckler came aboard to the Triconex startup at a critical time and modified and advanced the TSX version that was certified for use for industrial applications.  This certification was the key turning point for Triconex, not only allowing it to be sold to major customers, but gaining investors confidence to continue funding.  In 1986, Jerry Cuckler recommended a longtime friend, John Gabler to come to Triconex.  Mr. Gabler was hired by the software development manager, Phil Huber.  In 1988, Mr. Cuckler and Mr. Huber left Triconex to become founding partners of Wonderware, John Gabler took ownership of the TSX operating system and has been there ever since.  The system is as reliable and safe as the extraordinary engineers who designed it.