The Free On-line Dictionary of Computing (30 December 2018):

CMU Common Lisp
CMU CL

    (CMU CL) A public domain "industrial strength"
   Common Lisp programming environment.  Many of the X3J13
   changes have been incorporated into CMU CL.  Wherever
   possible, this has been done so as to transparently allow use
   of either CLtL1 or proposed ANSI CL.  Probably the new
   features most interesting to users are SETF functions,
   LOOP and the WITH-COMPILATION-UNIT macro.

   The new CMU CL compiler is called Python.

   Version 17c includes an incremental compiler, profiler,
   run-time support, documentation, an editor and a debugger.  It
   runs under Mach on SPARC, MIPS and IBM PC RT and under
   SunOS on SPARC.

   (ftp://lisp-sun1.slisp.cs.cmu.edu/pub/).

   E-mail: .

   (1993-11-18)