This package provides the Statistics::PCA module, an implementation of Principal Component Analysis (PCA).

Config::Grammar is a module to parse configuration files. The configuration may consist of multiple-level sections with assignments and tabular data.

Regexp::Pattern is a convention for organizing reusable regexp patterns in modules.

The package provides Perl bindings to OpenGL, GLU and FreeGLUT.

This package compiles yacc-like Look Ahead LR (LALR) grammars to generate Perl object oriented parser modules.

MailTools contains the following modules:

Mail::Address

Parse email address from a header line.

Mail::Cap

Interpret mailcap files: mappings of file-types to applications as used by many command-line email programs.

Mail::Field

Simplifies access to (some) email header fields. Used by Mail::Header.

Mail::Filter

Process Mail::Internet messages.

Mail::Header

Collection of Mail::Field objects, representing the header of a Mail::Internet object.

Mail::Internet

Represents a single email message, with header and body.

Mail::Mailer

Send Mail::Internet emails via direct smtp or local MTA's.

Mail::Send

Build a Mail::Internet object, and then send it out using Mail::Mailer.

Mail::Util

"Smart functions" you should not depend on.

This module allows libraries to have a dependency to a small module instead of the full Log-Report distribution. The full power of Log::Report is only released when the main program uses that module. In that case, the module using the Optional will also use the full Log::Report, otherwise the dressed-down Log::Report::Minimal version.

This package provides a simplified frontend to Log::Message, offering most common use for logging, and easy access to the stack (in both raw and pretty-printable form).

Log::Any provides a standard log production API for modules. Log::Any::Adapter allows applications to choose the mechanism for log consumption, whether screen, file or another logging mechanism like Log::Dispatch or Log::Log4perl.

A CPAN module uses Log::Any to get a log producer object. An application, in turn, may choose one or more logging mechanisms via Log::Any::Adapter, or none at all.

Log::Any has a very tiny footprint and no dependencies beyond Perl itself, which makes it appropriate for even small CPAN modules to use. It defaults to null logging activity, so a module can safely log without worrying about whether the application has chosen (or will ever choose) a logging mechanism.

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

Hash::Merge merges two arbitrarily deep hashes into a single hash. That is, at any level, it will add non-conflicting key-value pairs from one hash to the other, and follows a set of specific rules when there are key value conflicts. The hash is followed recursively, so that deeply nested hashes that are at the same level will be merged when the parent hashes are merged.

This module exports a single function: ttie. It ties a variable to a type constraint, ensuring that whatever values stored in the variable will conform to the type constraint. If the type constraint has coercions, these will be used if necessary to ensure values assigned to the variable conform.

RFCs 2822 and 822 specify date formats to be used by email. This module parses and emits such dates.

Circos is a program for the generation of publication-quality, circularly composited renditions of genomic data and related annotations.

This module provides configure time utilities for using C headers, libraries, or OS features.

Moose is a complete object system for Perl 5. It provides keywords for attribute declaration, object construction, inheritance, and maybe more. With Moose, you define your class declaratively, without needing to know about blessed hashrefs, accessor methods, and so on. You can concentrate on the logical structure of your classes, focusing on "what" rather than "how". A class definition with Moose reads like a list of very concise English sentences.

Hash::MultiValue is an object (and a plain hash reference) that may contain multiple values per key, inspired by MultiDict of WebOb.

This module provides a class to monitor a directory for changes made to any file.

ExtUtils::PkgConfig is a very simplistic interface to the pkg-config utility, intended for use in the Makefile.PL of perl extensions which bind libraries that pkg-config knows. It is really just boilerplate code that you would have written yourself.

This module provides functions to encode and decode UTF-8 encoding form as specified by Unicode and ISO/IEC 10646:2011.

Data::SExpression parses Lisp S-Expressions into Perl data structures.

The Text::Balanced module can be used to extract delimited text sequences from strings.

This package provides the docmake command-line tool, and the App::XML::DocBook::Docmake and App::XML::DocBook::Builder Perl modules.

It translates DocBook/XML mark-up into various other documentation formats such as XHTML, RTF, PDF, and XSL-FO, using the more low-level tools. It aims to be a replacement for xmlto.

The YAML.pm module implements a YAML Loader and Dumper based on the YAML 1.0 specification.