Portable Common Loops

(PCL) A language which started out as an implementation of CommonLoops and turned into a portable CLOS implementation. Version 1992-08-28. It runs under Lucid Common LISP 4.0.1 and CMU Common LISP 16e.

ftp://parcftp.xerox.com/pcl.

[Was it developed by Richard Harris <rharris@ptolemy2.rdrc.rpi.edu>?]