XML::MetaGenerator
- Collects user input, validates input and generates output in a number of ways based on the defined grammar.
- http://search.cpan.org/~brujah/XML-MetaGenerator/

Apache Xerces Perl API
- Includes a collection of Perl5 wrapper objects that internally use their XML4C counterparts for Level 1 DOM processing.
- http://xerces.apache.org/xerces-p/

XML::RSS
- A basic framework for creating and maintaining RSS files.
- http://perl-rss.sourceforge.net/

Performance Comparison Between SAX XML::Filter::Dispatcher and XML::Twig
- XML::Twig and the XML::SAX-based module XML::Filter::Dispatcher offer similar capabilities for implementing XPath-based dispatch tables. A performance comparison shows that they can have nearly identical execution speed.
- http://tomacorp.com/perl/xml/saxvstwig.html

XML::DOM::Twig
- Helper module that adds XML::Twig methods to XML::DOM.
- http://www.xmltwig.com/domtwig/

XML::Twig
- Provides a way to process large XML documents in tree mode.
- http://www.xmltwig.com/xmltwig/

XML::XPath
- XPath parser and evaluator.
- http://xml.sergeant.org/xpath.xml

XML::XSLT
- A Perl module that will convert XML documents on the basis of an XSL template.
- http://xmlxslt.sourceforge.net/