Hello,

  Besides Xalan, are there any good XSLT engines to be used inside a C/C++ program?

  Thanks,
    Rodrigo

Look at libxslt and Sablotron.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

Thanks for your reply. Two more questions, though:

1) Do these engines support any extension to write multiple files on the output? It doesn't necessarily have to be the xsl:result-document from XSLT 2.0, anything similar is just fine.
2) Is any of these engines capable of operating over a DOM tree in memory, instead of having to parse a file in disk? If possible, I would like to avoid the I/O operations of writing the XML file to disk just to have the XSLT engine read it right away.

  Thanks again,
    Rodrigo

I don't think there are any experts on those products contributing to this forum.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference