MCL 5.2 has been released as open source
Last edited Fri, 21 Mar 2008
MCL 5.2 is now available at:
It is open source. I am sorry that it does not run on Intel. I hope that some users will be able to find the resources for a port of MCL to Intel processors.
Please let me know of any questions or problems.
MCL is the distribution from which Clozure CL (nee OpenMCL) was derived. Clozure CL's compiler has been much enhanced over MCL's, which is currently PPC-only and not Rosetta compatible. MCL features a Carbon GUI with an Emacs clone named Fred, an interactive inspector and debugger, and a number of other useful tools.
I'd encourage anyone who is interested in making MCL Rosetta-capable or porting to Intel to sign up for the info-mcl mailing list. MCL is an important part of the Common Lisp legacy and it's good to see that it will not be lost to history like some other important implementations (Genera).