Hmm, an article about LISP on the JVM that doesn't mention Clojure...

Clojure is awesome, LISP + JAVA-libraries + JVM -> portability

You can have Lisp "portability" without the JVM, depending on your choice of implementation. What I like about SBCL is it compiles fast native code... haven't tried other platforms than Linux yet but I will---and then, I simply have a dislike for everything Java, including its class libraries.

I don't especially like Javas libraries either but they are usable and there are a lot of them and some very good ones.

It does mention it though, but only briefly (in a 'it's in early beta but looks awesome so keep an eye for once it stabilizes more sort of way)

They really should use http://sisc-scheme.org/ . It is a much better interpreter than Kawa. I don't think kawa has tail call optimization.

You're right, but Kawa compiles to JVM bytecodes and SISC is just an interpreter.