Perl extension to display stack trace in HTML

http://search.cpan.org/dist/Devel-StackTrace-AsHTML/

Perl5 module that dumps symbol names or the symbol table

https://metacpan.org/release/Devel-Symdump

Perl interface to GSM phones/modems on serial ports

http://search.cpan.org/dist/Device-Gsm/

Perl class to interface generic modems (AT-compliant)

https://metacpan.org/release/Device-Modem

Perl5 module for simple serial port control

https://metacpan.org/release/Device-SerialPort

Modules that calculate message digests

https://metacpan.org/release/Digest

Perl5 interface to a fingerprint in "bubble babble" format

https://metacpan.org/release/Digest-BubbleBabble

Perl5 interface to HMAC Message-Digest Algorithms

https://metacpan.org/release/Digest-HMAC

Perl extension for JHash hash algorithm

https://metacpan.org/release/Digest-JHash

Perl5 interface to the MD5 algorithm

https://metacpan.org/release/Digest-MD5

Perl extension for MD5 hash algorithm in pure Perl

https://metacpan.org/release/Digest-Perl-MD5

Perl extension for SHA-1/224/256/384/512

https://metacpan.org/release/Digest-SHA

Perl interface to the SHA-1 Algorithm

__DIR__ constant for the directory your source file is in

https://metacpan.org/release/Dir-Self

Declare version conflicts for your dist

https://metacpan.org/release/Dist-CheckConflicts

Perl interface to libev, a high performance full-featured event loop

https://metacpan.org/release/EV

Unified interface to mail representations

https://metacpan.org/release/Email-Abstract

RFC 2822 Address Parsing and Creation

https://metacpan.org/release/Email-Address

Parse and format RFC 2822 email addresses and groups

https://metacpan.org/release/Email-Address-XS

Produce RFC 2822 date strings

https://metacpan.org/release/Email-Date-Format

Easy MIME message parsing

https://metacpan.org/release/Email-MIME

Parse a MIME Content-Type Header

https://metacpan.org/release/Email-MIME-ContentType

Unified interface to MIME encoding and decoding

https://metacpan.org/release/Email-MIME-Encodings

Modify Email::MIME Objects Easily

http://search.cpan.org/dist/Email-MIME-Modifier/

Generate world unique message-ids

http://search.cpan.org/dist/Email-MessageID/

Email::Send - Simply Sending Email

https://metacpan.org/release/Email-Send

Simple parsing of RFC2822 message format and headers

https://metacpan.org/release/Email-Simple

Provides interfaces between strings and the rest of the system

https://metacpan.org/release/Encode

Encode::Encoding subclass that detects the encoding of data

https://metacpan.org/release/Encode-Detect

JIS X 0212 (aka JIS 2000) Encodings

https://metacpan.org/release/Encode-JIS2K

Determine the locale encoding

https://metacpan.org/release/Encode-Locale

Error/exception handling in object-oriented programming style

https://metacpan.org/release/Error

Safely and cleanly create closures via string eval

https://metacpan.org/release/Eval-Closure

Real exception classes in Perl

https://metacpan.org/release/Exception-Class

Lightweight exporting of functions and variables

https://metacpan.org/pod/Exporter::Lite

Exporter with features of Sub::Exporter but only core dependencies

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

Compile and link C code for Perl modules

https://metacpan.org/release/ExtUtils-CBuilder

Wrapper for perl configuration

https://metacpan.org/release/ExtUtils-Config

Easily build XS extensions that depend on XS extensions

http://search.cpan.org/dist/ExtUtils-Depends/

Various portability utilities for module builders

https://metacpan.org/release/ExtUtils-Helpers

Build.PL install path logic made easy

https://metacpan.org/release/ExtUtils-InstallPaths

Designed to write a Makefile for an extension module

https://metacpan.org/release/ExtUtils-MakeMaker

Cpanfile support for ExtUtils::MakeMaker

https://metacpan.org/release/ExtUtils-MakeMaker-CPANfile

Converts Perl XS code into C code

https://metacpan.org/release/ExtUtils-ParseXS

Simplistic interface to pkg-config

https://metacpan.org/release/ExtUtils-PkgConfig

Modules for perl5, for enabling FastCGI support in CGI scripts

https://metacpan.org/release/FCGI

Functions for managing FastCGI applications

https://metacpan.org/release/FCGI-ProcManager

Perl extension for recursively copying files and directories

https://metacpan.org/release/File-Copy-Recursive

Recursive copying of files and directories

https://metacpan.org/release/File-Copy-Recursive-Reduced

Object oriented File::Find replacement

https://metacpan.org/release/File-Find-Object