Allegro 8.1 CLisp 2.48 Clozure Common Lisp 1.4 CMU Common Lisp 20a Embeddable Common Lisp 9.12.3 LispWorks 5.1.1 Personal Edition LispWorks 5.1.2 Professional Edition MCL 5.2.1 SBCL 1.0.34 Scieneer 1.3.9