Allegro 8.1, 8.2 CLisp 2.49 Clozure Common Lisp 1.5 CMU Common Lisp 20b Embeddable Common Lisp 10.4.1 LispWorks 5.1.1 Personal Edition LispWorks 5.1.2 Professional Edition LispWorks 6.0.1 Enterprise Edition MCL 5.2.1 SBCL 1.0.43 Scieneer 1.3.9