BeanShell

Website: github.com/beanshell/beanshell

Designed by: JCP

BeanShell is a small, free, embeddable Java source interpreter with object scripting language features, written in Java.

It runs in the Java Runtime Environment (JRE), dynamically executes standard Java syntax and extends it with common scripting conveniences such as loose types, commands, and method closures, like those in Perl and JavaScript.