Allegro 8.2 CLisp 2.49 Clozure Common Lisp 1.7 CMU Common Lisp 20c Embeddable Common Lisp 12.2.1 LispWorks 5.1.2 Professional Edition LispWorks 6.0.1 Personal Edition LispWorks 6.0.1 Enterprise Edition LispWorks 6.1 Professional Edition MCL 5.2.1 SBCL 1.0.55 Scieneer 1.3.9