XML Code Folding
Stylus Studio's XML Editor features XML code folding, a powerful and intuitive way to maximize limited screen real-estate and help make sense of large XML files.
XHTML Tools
Powerful XHTML Tools for converting HTML to XHTML, validating XHTML, transforming XML to XHTML, editing JSP, creating XML driven Websites and more.
XML Schema Editor
Stylus Studio's XML Schema Editor lets you easily develop advanced data models expressed in W3C XML Schema. Its synchronized split-pane interface shows both a visual XML Schema Diagram and the underlying code, and you can edit in either one.
XPath Generator
Stylus Studio includes an XPath generator that helps you easily create XPath expressions. This page illustrates how you can accomplish this.