Sopwith

Despite speculation to the contrary BMB Compuscience never did go belly-up, but instead merged with and changed its name to Systems Xcellence Inc. late 1994 or early 1995.

The year of release of the second version of Sopwith (1985) is actually the likely year of creation as analyzed from the modification history of the official source code. "Sopwith 2" or "Sopwith II", as it became known, probably started spreading around 1986 or 1987.