Time zone object base class and factory

https://metacpan.org/release/DateTime-TimeZone

Figure out the names of variables passed into subroutines

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

Stack trace and stack trace frame objects

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

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 HMAC Message-Digest Algorithms

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

Perl5 interface to the MD5 algorithm

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

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

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

Perl interface to the SHA-1 Algorithm

Declare version conflicts for your dist

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

RFC 2822 Address Parsing and Creation

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

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

Determine the locale encoding

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

Error/exception handling in object-oriented programming style

https://metacpan.org/release/Error

Real exception classes in Perl

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

Compile and link C code for Perl modules

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

Designed to write a Makefile for an extension module

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

Converts Perl XS code into C code

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

Modules for perl5, for enabling FastCGI support in CGI scripts

https://metacpan.org/release/FCGI

Perl extension for recursively copying files and directories

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

Get home directory for self or other users

http://search.cpan.org/dist/File-HomeDir/

Parse directory listings

https://metacpan.org/release/File-Listing

File::NFSLock - perl module to do NFS (or not) locking

http://search.cpan.org/dist/File-NFSLock/

Perl5 module to easily removes files and directories

http://search.cpan.org/dist/File-Remove/

Locate per-dist and per-module shared files

https://metacpan.org/release/File-ShareDir

Perl Module to read the end of a file as it\x27s appended to

https://metacpan.org/release/File-Tail

Perl5 module to generate temporary files or directories safely

http://search.cpan.org/dist/File-Temp/

Portable implementation of which(1) in Perl

https://metacpan.org/release/File-Which

Number of source filters for perl5 programs

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

Perl extension providing access to the GSSAPIv2 library

https://metacpan.org/release/GSSAPI

Handle ISO-3166 country codes

https://metacpan.org/release/Geography-Countries

Perl module for processing argument vectors

https://metacpan.org/release/Getopt-ArgvFile

Perl module for extended processing of command line options

Graph, the Perl module for graph operations

https://metacpan.org/release/Graph

Module to produce HTML 'breadcrumb trails'

https://metacpan.org/release/HTML-Breadcrumbs

Determine the encoding of HTML/XML/XHTML documents

https://metacpan.org/release/HTML-Encoding

High-performance, dynamic web site authoring system

https://metacpan.org/release/HTML-Mason

Perl module for handling CGI HTML paging of arbitrary data

https://metacpan.org/release/HTML-Pager