PPI regular expression parser

http://search.cpan.org/dist/PPIx-Regexp/

Extensions to PPI

http://search.cpan.org/dist/PPIx-Utilities/

List all constants declared in a package

http://search.cpan.org/dist/Package-Constants/

Manage deprecation warnings for your distribution

http://search.cpan.org/dist/Package-DeprecationManager/

Routines for manipulating stashes

http://search.cpan.org/dist/Package-Stash/

Faster and more correct implementation of the Package::Stash API

http://metacpan.org/release/Package-Stash-XS

Parameterizable packages

http://search.cpan.org/dist/Package-Variant/

PadWalker - play with Perl lexical variables

http://search.cpan.org/dist/PadWalker/

Simple parallel processing fork manager

https://metacpan.org/release/Parallel-ForkManager

Allows your classes to do coercion of parameters (Params::Coerce)

https://metacpan.org/release/Params-Coerce

Utility functions to aid in parameter checking

http://search.cpan.org/dist/Params-Util/

Validate method/function parameters

http://search.cpan.org/dist/Params-Validate/

Build an optimized subroutine parameter validator once, use it forever

https://metacpan.org/release/Params-ValidationCompiler

Parse META.yml and other similar CPAN metadata files

http://search.cpan.org/dist/Parse-CPAN-Meta/

Recursive descent parsing framework for Perl

http://search.cpan.org/dist/Parse-RecDescent/

Perl5 routines that present a simple interface to parse syslog files

http://search.cpan.org/dist/Parse-Syslog/

Perl extension for generating and using LALR parsers

https://metacpan.org/release/Parse-Yapp

Perl module with utilities to read and manipulate patches and CVS

http://search.cpan.org/dist/PatchReader/

Cross-platform path specification manipulation

http://search.cpan.org/dist/Path-Class/

File path utility

https://metacpan.org/release/Path-Tiny

Perl module for portably manipulating file specifications

http://search.cpan.org/dist/PathTools/

Critique Perl source for style and standards

http://search.cpan.org/dist/Perl-Critic/

Find a minimum required version of perl for Perl code

https://metacpan.org/release/Perl-MinimumVersion

Map Perl operating system names to generic types

https://metacpan.org/release/Perl-OSType

Indents and reformats Perl scripts to make them easier to read

https://metacpan.org/release/Perl-Tidy

Fast and correct UTF-8 IO

https://metacpan.org/release/PerlIO-utf8_strict

Interface for using perl5 to access PostgreSQL databases

http://www.postgresql.org/

Perl extension of PSGI reference implementation and utilities

https://metacpan.org/release/Plack

Checks if the documentation of a module is comprehensive

http://search.cpan.org/dist/Pod-Coverage/

Declare trusted symbol names in POD

https://metacpan.org/release/Pod-Coverage-TrustPod

For resolving Pod E<...> sequences

http://search.cpan.org/dist/Pod-Escapes/

Read a POD document as a series of trivial events

https://metacpan.org/release/Pod-Eventual

Module to convert POD to Markdown

http://search.cpan.org/dist/Pod-Markdown/

POD Object Model

http://search.cpan.org/dist/Pod-POM/

Modules to work with POD (Plain Old Documentation)

http://search.cpan.org/dist/Pod-Parser/

Convert POD to README file

http://search.cpan.org/dist/Pod-Readme/

Framework for parsing Pod

http://search.cpan.org/dist/Pod-Simple/

Formatter for spellchecking Pod

https://metacpan.org/release/Pod-Spell

Remove POD from Perl code

https://metacpan.org/release/Pod-Strip

Extracts embedded tests and code examples from POD

https://metacpan.org/release/Pod-Tests

Information about the currently running perl

https://metacpan.org/release/Probe-Perl

Interpret and act on wait() status values

http://search.cpan.org/dist/Proc-WaitStat/

XML-RPC client and server library for Perl

http://search.cpan.org/dist/RPC-XML/

Perl 5 module for Term::ReadLine editing without GNU readline

http://search.cpan.org/dist/Term-ReadLine-Perl/

Facility for creating read-only scalars, arrays, hashes

http://search.cpan.org/dist/Readonly/

Utility functions for checking references

https://metacpan.org/release/Ref-Util

Utility functions for checking references (XS version)

https://metacpan.org/release/Ref-Util-XS

Regexp::Common - Provide commonly requested regular expressions

http://search.cpan.org/dist/Regexp-Common/

Return::Value - Polymorphic Return Values

http://search.cpan.org/dist/Return-Value/

Roles, like a nouvelle cusine portion size slice of Moose

http://search.cpan.org/dist/Role-Tiny/