Saxonica: Welcome

Developers of the Saxon processor for XSLT, XQuery, and XML Schema, including the only XSLT 3.0 conformant toolset.

Saxonica was founded by Dr Michael Kay in 2004. Over the years, we have delivered:

More than 170 software vendors have built Saxon into their own applications.

Microsoft, for example, has chosen Saxon to provide XSLT 3.0 capability within BizTalk Server 2020.

6 of the world's top 10 software vendors are Saxonica clients.

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For commercial enquiries, please contact .

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Recent news

Latest announcements are listed below, for full history see News.

24 August 2023
Saxon 11.6 maintenance release for Java, .NET, and C/C++, PHP and Python.

4 August 2023
Michael Kay presented the paper Schema-Aware Conversion of XML to JSON at Balisage: The Markup Conference 2023, Washington DC.

31 July 2023
Norm Tovey-Walsh presented the paper Ambiguity in iXML: And How to Control It at Balisage: The Markup Conference 2023, Washington DC.

4 July 2023
Saxon 12.3 maintenance release for Java, .NET, and C/C++, PHP and Python.

2 May 2023
Matt Patterson has joined the development team at Saxonica.

2 May 2023
Saxon 12.2 maintenance release for Java, .NET, and C/C++, PHP and Python.

21 March 2023
Saxon 12.1 maintenance release for Java, .NET, and C/C++, PHP and Python.

21 March 2023
A new announcements blog has been added for release announcements.

16 February 2023
Saxon 10.9 maintenance release for Java and .NET.

12 January 2023
Saxon 12.0 first release for Java, .NET, and C/C++, PHP and Python.

12 January 2023
The Saxon open-source project at SourceForge is now obsolete. From now on open-source releases will be available on GitHub instead. The Saxon-HE repository contains current releases, while the Saxon-Archive repository contains older releases and other content migrated from SourceForge.

4 October 2022
SaxonJS 2.5 maintenance release for Node.js and browsers.

3 October 2022
There has been a 20% shift in the USD-GBP exchange rate over the past six months, with severe fluctuation in the last few weeks. In an attempt to keep our USD prices stable, we have increased our GBP list prices across the board by 20%. Existing contracts and quotations will be honoured. When ordering offline, please let us know whether you prefer to be invoiced in GBP, USD, or EUR.

4 August 2022
Michael Kay presented the paper XSLT Extensions for JSON Processing at Balisage: The Markup Conference 2022, Washington DC.

2 August 2022
Norm Tovey-Walsh and others presented the paper Designing for change: Pragmas in Invisible XML as an extensibility mechanism at Balisage: The Markup Conference 2022, Washington DC.

1 August 2022
Norm Tovey-Walsh and others presented the paper Invisible XML Coming into Focus at Balisage: The Markup Conference 2022, Washington DC.

10 June 2022
Michael Kay presented the paper Expression Elaboration at XML Prague 2022.

10 February 2022
The saxon-help mailing list at SourceForge is now closed. Please use forums on StackOverflow and the Saxonica community site instead.

2 February 2022
New Saxon licenses are now fixed-term rather than perpetual. See Saxon licenses for details.

1 February 2022
Saxon 11.1 maintenance release for .NET, and first release for Java, and C/C++, PHP and Python.