Macintosh Common Lisp is Common Lisp for the Apple Macintosh. This is the reference implementation of Lisp for the Classic Mac OS. Guillaume Cartier, of the Mathematics Department at UQAM, Canada, has written some libraries. Latest version: 1.2. A more Mac-centric Lisp that was produced around the same time is PueLisp. ftp://cambridge.apple.com/pub/mcl2/contrib/.