Chart::Lines:
CPAN Download Page: http://search.cpan.org/dist/Chart/
Documentation: http://search.cpan.org/dist/Chart/Chart.pod
GD::Graph:
CPAN Download Page: http://search.cpan.org/dist/GDGraph/
Documentation: http://search.cpan.org/dist/GDGraph/Graph.pm
GD::Text::Align (part of GD::Text::Util):
CPAN Download Page: http://search.cpan.org/dist/GDTextUtil/
Documentation: http://search.cpan.org/dist/GDTextUtil/Text/Align.pm
XML::Twig:
CPAN Download Page: http://search.cpan.org/dist/XML-Twig/
Documentation: http://standards.ieee.org/resources/spasystem/twig/twig_stable.html
PatchReader:
CPAN Download Page: http://search.cpan.org/author/JKEISER/PatchReader/
Documentation: http://www.johnkeiser.com/mozilla/Patch_Viewer.html