W3C XML Specifications
Learn about the official W3C XML specifications for XML, XSLT, XQuery, XPath, DOM, XML Namespaces, XInclude, XML Base, XPointer, WSDL and more.
XPath Editor
Stylus Studio's intelligent code-sensing, auto-completion technology, Sense:X, is XPath-aware. You'll find Sense:X for XPath in all of Stylus Studio's editors, including the XML Editor, XSLT Editor, and XQuery Editor.
XSD Editor
XSD Editor provides a synchronized split-pane interface that simultaneously shows both a visual XSD Diagram and the underlying code, with changes in one pane immediately reflected in the other
DTD Validator
This page talks about Stylus Studio's DTD Validator it has the ability to specify any third-party XML parsers and validators, real-time syntax checking and DTD validation error reporting, backmapping, integrating third-party DTD validators and more!