IBM Alphaworks XML Schema Quality Checker

The IBM's alphaWorks group has released a tool called the XML Schema Quality Checker, which checks the quality and style of your XML schema. For example, it will check all of the enumerated values of an element or type, and make sure they all fit within a given length facet. This tutorial shows how to install and use the XML Schema quality checker with the Stylus Studio XML IDE.

http://www.stylusstudio.com/sqc.html