A Site to search CPAN - The Comprehensive Perl Archive Network CPAN is the "Comprehensive Perl Archive Network". It is a large collection of open-source user-contributed Perl modules that can be used in your own programs and modules and facilitate many tasks. search.cpan.org is the definitive resource for searching for modules in CPAN, and also provides and links to other resources about them. For example, all the documentation of the modules can be accessed from there. It is the first stop in any Perl development work.