CGI::Session provides modular session management system across HTTP requests.

Array::Utils is a small pure-perl module containing list manipulation routines.

This package provides a package to change terminal modes and perform non-blocking reads.

This Perl module is an interface to the GNOME project's libxslt library.

This module is a rather incomplete implementation of work done by Gudrun Putze-Meier.

Test::NoTabs lets you check the presence of tabs in your perl code.

Params::Util provides a basic set of importable functions that makes checking parameters easier.

This module in a fully object-oriented implementation of a simple n-ary tree.

This is a minimalist Perl module for building simple classes with read-only accessors.

Carp::Assert is intended for a purpose like the ANSI C library assert.h.

The Digest::HMAC module follows the common Digest:: interface for the RFC 2104 HMAC mechanism.

A String::Util module of small, handy functions for processing strings in various ways.

Test::Tester allows testing of test modules based on Test::Builder with a minimum of effort.

The HTML::Tagset module contains several data tables useful in various kinds of HTML parsing operations.

This package provides a rich set of tools, plugins, bundles, etc built upon the Test2 testing library.

The Math::Cephes module provides a Perl interface to over 150 functions of the Cephes math library.

This routine applies stemming algorithms to its parameters, returning the stemmed words as appropriate to the selected locale.

The Archive::Zip module allows a Perl program to create, manipulate, read, and write Zip archive files.

Perl module Web::Scraper is a toolkit for traversing and scraping sites, inspired by Ruby's Scapi.

Set::IntSpan manages sets of integers. It is optimized for sets that have long runs of consecutive integers.

This package provides the Net::Netmask Perl module. It can parse, manipulate and lookup IP network blocks.

This package provides Digest::SHA1, an implementation of the NIST SHA-1 message digest algorithm for use by Perl programs.

This package provides Digest::SHA3, an implementation of the NIST SHA-3 message digest algorithm for use by Perl programs.

Perl's IO::Compress module provides an interface for reading and writing compressed data created with the zlib and bzip2 libraries.