Altova offers free XSLT 1.0/2.0 & XQuery Engine
Still waiting for Microsoft to include XQuery & XSLT 2.0 support? Altova makes the same engines that drive its XMLSpy®, MapForce®, and StyleVision® XML development tools available for use in custom applications – free of charge! Sold!
AltovaXML™ is an entirely free download that includes the Altova:
![.](http://www.altova.com/images/p.gif) | ![.](http://www.altova.com/images/ref.gif) | XML validating parser | ![.](http://www.altova.com/images/ref.gif) | XSLT 1.0 engine | ![.](http://www.altova.com/images/ref.gif) | XSLT 2.0 engine (schema-aware) | ![.](http://www.altova.com/images/ref.gif) | XQuery 1.0 engine |
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AltovaXML™ features include:
![.](http://www.altova.com/images/p.gif) | ![.](http://www.altova.com/images/ref.gif) | Well-formedness checking | ![.](http://www.altova.com/images/ref.gif) | Validation based on DTD or XML Schema | ![.](http://www.altova.com/images/ref.gif) | XML transformations via XSLT 1.0 | ![.](http://www.altova.com/images/ref.gif) | Schema-aware XML transformations via XSLT 2.0 | ![.](http://www.altova.com/images/ref.gif) | XML queries and transformations via XQuery | ![.](http://www.altova.com/images/ref.gif) | Command line operations | ![.](http://www.altova.com/images/ref.gif) | COM interface | ![.](http://www.altova.com/images/ref.gif) | Java interface | ![.](http://www.altova.com/images/ref.gif) | .NET interface |
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Hopefully its up to its feature-rich billing. I'll definitely be checking it out. Please post commets if you've had any experience with it.