Steel Bank Common Lisp - Steel Bank Common Lisp (SBCL) is a high performance Common Lisp compiler.
Chicken - A portable and efficient cross-platform Scheme implementation that compiles to C.
CMU Common Lisp - CMUCL is a high-performance, free Common Lisp implementation.
Gambit - Cross-platform chess game.
Clozure Common Lisp - Clozure CL (often called CCL for short) is a free Common Lisp implementation with a long history.
JavaScript - Lightweight, interpreted, object-oriented language with first-class functions