The company specialized in compiler technology. It was responsible for the design and implementation of the HAL/S programming language, used to write the Space Shuttle PASS (Primary Avionics Software System). It participated in the design effort leading to the Ada programming language, designed the Red language, one of the finalists in the design competition, and wrote one of the first production-quality Ada compilers. The large-scale Ada 95 revision of the language was designed at Intermetrics.[1][2]. Intermetrics also developed the CS-4 programming language for the United States Navy in the 1970s as a "language extension" to CMS-2 and as "a translator for existing CMS-2 programs".[3]