MSXML - Microsoft XML Tools
MSXML tools in Stylus Studio feature integrated XML validation, XSLT transformation and XSLT debugging using the Microsoft's COM-based XML processing components: MSXML 3.0, MSXML 4.0 and MSXML 6.0
XML Differencing
Stylus Studio's integrated XML Differencing tool visually computes and analyzes any changes made to files or folders in a highly configurable, XML-aware fashion. Display text or tree views, with changes displayed in a merged view or side-by-side!
Xerces - Parsing and Validating XML with the Apache Xerces Parser
The Xerces Parser supports the XML 1.0 recommendation and W3C's XML Schema recommendation version 1.0, DOM and SAX. Learn how easy it is to use Apache Xerces directly in Stylus Studio to parse and validate XML with ease.
XML Well-Formedness Checker & XML Indenter
Tidy up your XML documents with powerful integrated XML editing utilities including a single-click XML formatter, pretty printer, XML indenter and XML well formedness checker.