Foil provides a protocol and code to interface between Lisp and instances of runtimes such as the JVM and CLR, offering comprehensive, safe, dynamic, efficient, and portable access to Java and CLI libraries from Lisp, with an emphasis on working in Lisp
Clojure is a dynamic programming language for the JVM. Note - current Clojure development has moved to Google code: http://code.google.com/p/clojure/ Project web site: http://clojure.org
jfli is a library for Common Lisp that provides comprehensive, safe, dynamic and Lisp-y access to Java and Java libraries as if they were Lisp libraries, for use in Lisp programs, i.e. emphasizing working in Lisp rather than in Java.