XQuery Functions - User Defined Functions in XQuery
Dr. Michael Kay's tutorial entitled: 'Defining your own Functions in XQuery' explains how to write powerful User Defined Functions in XQuery.
XQuery Profiler
Stylus Studio's XQuery Profiler allows you to benchmark any XQuery expression, and it helps you locate and eliminate performance bottlenecks for maximum XQuery performance.
XML Publisher - XSLT Generator and XSL:FO Generator
The XML Publisher lets you easily design beautiful documents in HTML or PDF format from relational, XML and other data sources using XSL:FO or XSLT, using an intuitive visual interface.
Saxon XSLT Processor
Stylus Studio® has partnered with Saxonica, a leading provider of Java-based XSLT and XQuery processing components to offer a robust XSLT 1.0 and 2.0 development environment, featuring development and deployment using the Saxon XSLT processor.