Sub::Install makes it easy to install subroutines into packages without the unsightly mess of C<no strict> or typeglobs lying about where just anyone can see them.

PadWalker is a module which allows you to inspect (and even change) lexical variables in any subroutine which called you. It will only show those variables which are in scope at the point of the call. PadWalker is particularly useful for debugging.

While Mouse attributes provide a way to name your accessors, readers, writers, clearers and predicates, MouseX::NativeTraits provides commonly used attribute helper methods for more specific types of data.

This module is a helper for easily finding configuration file locations. This information can be used to find a suitable place for installing configuration files or for finding any piece of settings.

The Digest::JHash module allows you to use the fast JHash hashing algorithm developed by Bob Jenkins from within Perl programs. The algorithm takes as input a message of arbitrary length and produces as output a 32-bit "message digest" of the input in the form of an unsigned long integer.

Struct::Dumb creates record-like structure types, similar to the struct keyword in C, C++ or C#, or Record in Pascal. An invocation of this module will create a construction function which returns new object references with the given field values. These references all respond to lvalue methods that access or modify the values stored.

This module is for reading record-oriented data in a delimited text file. The most common example have records separated by newlines and fields separated by commas or tabs, but this module aims to provide a consistent interface for handling sequential records in a file however they may be delimited.

This Perl module provides various functions to quickly sort arrays by one or multiple calculated keys.

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

This module can serve as a transparent interface to any TIEHASH package that is required to store arbitrary perl data, including nested references. Thus, this module can be used for storing references and other arbitrary data within DBM databases.

This module disables bareword filehandles.

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.

Test::Run is an improved test harness, originally based on Test::Harness version 2.xx by Michael G. Schwern, Andy Lester and others.

The top-level "Test::Run" by itself does not do much. You should refer to Task::Test::Run::AllPlugins for more detailed instructions.

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.

This module provides a syntax plugin that implements exception-handling semantics in a form familiar to users of other languages, being built on a block labeled with the try keyword, followed by at least one of a catch or finally block.

YAML::Tiny is a perl class for reading and writing YAML-style files, written with as little code as possible, reducing load time and memory overhead.

The Inline::C module allows you to write Perl subroutines in C. Since version 0.30 the Inline module supports multiple programming languages and each language has its own support module. This document describes how to use Inline with the C programming language. It also goes a bit into Perl C internals.

Sys::Syscall allows one to use epoll and sendfile system calls from Perl. Support is mostly Linux-only for now, but other syscalls/OSes are planned for the future.

YAML::XS is a Perl XS binding to libyaml which offers Perl the best YAML support to date.

This Clone::Choose module checks several different modules which provide a clone() function and selects an appropriate one.

Data::Dumper::Concise provides a dumper with Less indentation and newlines plus sub deparsing.

The Params::Validate module allows you to validate method or function call parameters to an arbitrary level of specificity.

This module provides a collection of named blocks that allow a return statement to return different values depending on the context in which it is called.

IPC::ShareLite provides a simple interface to shared memory, allowing data to be efficiently communicated between processes.