For inspecting module subs and class methods, I use Class::Inspector in a script like so:

#!/usr/bin/perl
use strict;
use warnings;
use Class::Inspector;
use English qw( -no_match_vars );

for my $class_name ( @ARGV ) {
    chomp $class_name;
    print "$class_name:\n";
    eval {
        eval "require $class_name";
    };
    if ( $EVAL_ERROR ) {
        print "Unable to load class $class_name! ($EVAL_ERROR)\n";
        next;
    }

    my $method_names_ref = Class::Inspector->methods( $class_name, 'full' );
    if ( !defined $method_names_ref ) {
        print "No methods for class $class_name!\n";
        next;
    }

    my @method_names = @{ $method_names_ref };
    for my $method_name ( sort @method_names ) {
        print "\t$method_name\n";
    }
}