CPAN modules to consider using:

AnyData::Format::XML 
Data::DumpXML 
Data::DumpXML::Parser 
XML::Simple
XML::Writer

other perl modules which are used:

Text::Unaccent from http://www.senga.org/unac/

Modules which are used:
CGI::Application
HTML::Template
HTML::FillInForm
Spreadsheet::ParseExcel
MARC
Text::CSV