Jython is Python (2.1) written in 100% Java. It byte compiles to Java and is meant to be a scripting language for Java (it integrates very nicely with Java libraries). The idea is to write code using Python syntax to manipulate the vast Java libraries.
Compared with Jacl and TclBlend, Jython isn't so much a scripting language for Java but a different language for the JVM. Its sort of like C++ for the C/Unix API.
Why mention Jython here? Well, like Java, it too can be scripted with Tcl (see TclBlend Roux).
The funny thing is: Jython is an alternative to the Java syntax, not a scripting solution. TclBlend and Jacl for scripting Jython! Oh, my.
-- Todd Coram
Interesting stuff. Todd, please say a few more words on why Jython is not "scripting".