Xalan is an XSLT (Extensible Stylesheet Language Transformation) processor for transforming XML documents into HTML, text, or other XML document types. Has various versions (C++, Java) available. (Was initially called LotusXSL by IBM Alphaworks)

A package collecting the tools required for writing basic XML applications in Python, along with documentation and sample code. Features include (but are not limited to) SAX, DOM, the xmlproc validating parser, and an Expat interface.

SAXON is an XSLT processor developed by Michael Kay.

The Schematron is an XML structural validation language that uses patterns in trees instead of being based on grammars. Tested to work with the following XSLT implementations: MSXSL, SAXON and Oracle work fine. XT, Xalan, and Sablotron can work with c...

A collection of Python tools for XML processing and object management. Features a repository, a rules-based engine, XSLT, XPath, RDF-based indexing and XLink resolution.

A developer product implementing various XML-enabling technologies, which include a parser, writers, DOM, XPath, XSLT, XSLT extensions, XML-enabling extensions for ECMAScript (Javascript). The ECMA extensions are contained in a runtime library which m...

A text based tool to debug stylesheets and it is similar to the Unix/Linux debugger gdb. It uses using the libxslt library.

Commercial IDE for creating, validating, and debugging XSL, and XML-to-XML mappings. Integrated XSLT, Java, and MSXML debugger.

Parses XSL Transformational sheets. It uses XML::Parser and XML::DOM. Project information, man page, and downloads.

PSGML is a GNU Emacs Major Mode for editing SGML and XML coded documents. PSGML has several functions for editing SGML documents. Indentation according to element nesting depth and identification of structural errors (but it is not a validating SGML p...