YACC

Yet Another Compiler Compiler

The language used by the yacc LALR parser generator.

"YACC - Yet Another Compiler Compiler", S. C. Johnson, CS TR 32, Bell Labs (Jul 1975).

ayacc

University of California at Irvine

Written in Ada, and produces Ada output.

"Yacc in SASL - An Exercise in Functional Programming", Simon Peyton-Jones, Software Prac & Exp 15:807-820 (1985). Mentions also a BCPL implementation.