CL-Yacc
CL-Yacc is a LALR(1) parser generator for Common Lisp, somewhat like Zebu or LALR.cl.

CL-Yacc was written by JCh.

See the CL-Yacc home page, the CL-Yacc source tree.

ASDF-install package (obsolete) http://www.pps.jussieu.fr/~jch/software/files/cl-yacc-0.3.tar.gz