Saxon
Packaging, installation, and licensing changes
Schema-aware XSLT and XQuery processing
S9API interface
Changes specific to .NET
XSLT 2.0 implementation
XQuery 1.0 implementation
Command line interfaces
XQJ (JSR 225) interface
XQuery Updates implementation
XQuery 3.0 implementation
XML Schema 1.0 implementation
XML Schema 1.1 implementation
Saxon extensions to the W3C XSD specification
Streamed processing of input documents
Functions, operators, and data types for XPath 2.0
Handling of source documents
Serialization
Support for DOM, JDOM, DOM4J, and XOM
Extensibility mechanisms
Saxon extensions to the W3C XSLT/XQuery specifications
Optimizations and performance improvements
Internal changes