The Compress::Raw::Zlib module provides a Perl interface to the zlib compression library.

PerlIO::gzip provides a PerlIO layer that manipulates files in the format used by the gzip program.

The IO::Zlib module is a Perl IO style interface to Compress:Zlib that simplifies reading and writing compressed data.

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

The Compress::Bzip2 module provides a Perl interface to the Bzip2 compression library. A relevant subset of the functionality provided by Bzip2 is available in this module.

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

This module Compress::Raw::Bzip2 provides a Perl interface to the bzip2 compression library.

It allows you to extract any archive file of the type .tar, .tar.gz, .gz, .Z, tar.bz2, .tbz, .bz2, .zip, .xz,, .txz, .tar.xz or .lzma without having to worry how it does so, or use different interfaces for each type by using either Perl modules, or command-line tools on your system.

This package provides a library and simple REPL for the Perl Data Language.

This packages allows you to interpolate the value Y from X using a list of (X, Y) pairs.

This package provides a library and simple REPL for the Perl Data Language.

This package provides modules to do 3D graphics in PDL.

This package provides the Math::MatrixReal module. It implements the data type "matrix of real numbers" (and consequently also "vector of real numbers").

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

This package provides PGPLOT bindings for Perl. It uses giza instead of PGPLOT for the implementation, though.

This module provides functions to deal with IPv4/IPv6 addresses. The module can be used as a class, allowing the user to instantiate IP objects, which can be single IP addresses, prefixes, or ranges of addresses. There is also a procedural way of accessing most of the functions. Most subroutines can take either IPv4 or IPv6 addresses transparently.

This package provides a client library for Vipul's Razor. Vipul's Razor is a distributed, collaborative, spam detection and filtering network. Through user contribution, Razor establishes a distributed and constantly updating catalogue of spam in propagation that is consulted by email clients to filter out known spam. Detection is done with statistical and randomized signatures that efficiently spot mutating spam content. User input is validated through reputation assignments based on consensus on report and revoke assertions which in turn is used for computing confidence values associated with individual signatures.

Package extracted from SOAP::Lite. Slightly modified to work on multiple platforms.

The Perl module Geo::IP looks up location and network information by IP Address.

This module provides functions to percent-encode and percent-decode URI strings as defined by RFC 3986. Percent-encoding URI's is informally called URI escaping. This is the terminology used by this module, which predates the formalization of the terms by the RFC by several years.

This package provides a HTML and XML DOM parser. It also supports CSS selectors.

This module implements a wrapper for Net::SMTP, enabling over-SSL/STARTTLS support. This module inherits most of all the methods from Net::SMTP(2.X).

SOAP::Lite is a collection of Perl modules that provide a simple and lightweight interface to the SOAP, both on client and server side.

This package provides a class method constructs a new Net::IMAP::Simple object. It takes one required parameter which is the server to connect to, and additional optional parameters.