I came across the recent CodeMap for Go project (https://github.com/peterretief/codemap) and decided to adapt it for Perl.

It uses PPI for static analysis and generates a self-contained HTML visualization with dependency graphs, searchable modules and subroutines, and syntax-highlighted source browsing.

Because of the nature of Perl, it's far from perfect...but functional and a pretty cool tool for a quick map of a codebase.

Source: https://github.com/interrupt21h/perl-codemap

CPAN: https://metacpan.org/pod/Perl::CodeMap