Eclipse Common Lisp
Eclipse Common Lisp is an ANSI Common Lisp written by Howard Stearns while at Elwood Corp.
(This system is unrelated to the eclipse Java IDE)
Eclipse Common Lisp is a Lisp interpreter written in C and Lisp. It is also capable of compiling Lisp to C and linking it into the eclipse system.
Ultimately, Eclipse Common Lisp will be portable to 32 & 64 bit Linux, Mac, and Windows.
See README2.txt for further instructions.