YUI Compressor, a new javascript compressor

Yui Compressor, as the name wouldn't suggest, is not working only on YUI, but is a general javascript compressor based on Rhino, the Javascript interpreter implementation in Java, included in Java 6.

It announced 18% and 10% better compression than JSMin and Dojo's Shrinksafe respectively, while still keeping JSMin's reliability. Its limitations are mainly with "eval" and "with".