Eclipse Common Lisp, an open-source Common Lisp implementation.

Eclipse Common Lisp is an ANSI Common Lisp written by Howard Stearns while at Elwood Corp.

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.

Eclipse can be downloaded from github site.

Common Lisp implementation