AverStar (formerly Intermetrics, Inc.) was a software company founded in Cambridge, Massachusetts in 1969 by several veterans of M.I.T.
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).
The large-scale Ada 95 revision of the language was designed at Intermetrics.
In 1997, Intermetrics merged with computer game developer Looking Glass Studios [1].
In 1998, Intermetrics acquired Pacer Infotec, and changed its name to 'AverStar'.