BLISS

BLISS is a system programming language developed at Carnegie-Mellon by W. A. Wulf, D. B. Russel, and A. N. Habermann around 1970. It was the perhaps the best known systems programming language right up until C made its debut a few years later. Since then, C took off and BLISS faded into obscurity. (When C was in its infancy, a few projects within Bell Labs were debating the merits of BLISS vs. C.)