Perl XML info

XML::Simple -- reads an XML file and converts it to a hashref data structure in Perl for ease of manipulation. Does not preserve any order information.

XML::Dumper -- Perl module for dumping Perl objects from/to XML

Perl-XML FAQ -- how to know when you need a more sophisticated parser than XML::Simple, and which parser to choose.

XML::Twig -- A perl module for processing huge XML documents in tree mode.