Once upon a time I recommended using search.cpan.org,
but today I'd recommend MetaCPAN.org.
See the articles and vidoes about MetaCPAN.
Gabor can help refactor your old Perl code-base.
He runs the Perl Weekly newsletter.
Contact Gabor if you'd like to hire his service.
Buy his eBooks or if you just would like to support him, do it via Patreon.