Saxonica: XSLT and XQuery Processing

Why XSLT and XQuery?

Questions and answers

Saxon 9.1 is now available, continuing Saxon's tradition of fast implementation of new standards in the XML family.

Significant innovations include:

Support for XQuery Updates
Selected features from XML Schema 1.1 (assertions, co-occurrence constraints, ...)
A conformant implementation of the XQuery API for Java (XQJ)
New facilities for streaming of large documents in both XSLT and XQuery
... and much more

For more details see here.

Saxon-SA 9.1 can be downloaded from here. Users with licenses issued after 2 July 2007 can upgrade at no cost; those with earlier licenses can purchase an upgrade.