Jython, lest you do not know of it, is the most compelling weapon the Java platform has for its survival into the 21st century - Sean McGrath

Why Jython

There are numerous [http://grunge.cs.tu-berlin.de/~tolk/vmlanguages.html alternative languages] implemented for the Java VM. The following features help to separate Jython from the rest:

What Does Jython Do Well?