Allegro 8.2 CLisp 2.49 Clozure Common Lisp 1.6 CMU Common Lisp 20b Embeddable Common Lisp 11.1.1 LispWorks 5.1.2 Professional Edition LispWorks 6.0.1 Personal Edition LispWorks 6.0.1 Enterprise Edition MCL 5.2.1 SBCL 1.0.45 Scieneer 1.3.9