XSL Transformations (XSLT) compiler from Xalan-Java

 XSLTC provides a compiler and a runtime processor. Use the compiler to
 compile an XSL stylesheet into a translet (i.e. a set of Java classes).
 Use the runtime processor to apply the translet to an XML document and
 perform a transformation. XSLTC is part of the Xalan-Java project.