This module is optionally used by Type::Tiny to provide faster, C-based implementations of some type constraints. This package has only core dependencies, and does not depend on Type::Tiny, so other data validation frameworks might also consider using it.

Test::Count is a set of perl modules for keeping track of the number of tests in a test file. It includes the ability to use mathematical expressions and variables when computing the count.

Dates are complex enough without times and timezones. This module may be used to create simple date objects. It handles validation, interval arithmetic, and day-of-week calculation. It does not deal with hours, minutes, seconds, and time zones.

This module implements Spreadsheet::XLSX parsing Microsoft Excel 2007 xlsx files.

This module attempts to recover from people calling UNIVERSAL::isa as a function.

Tie::Hash::Method provides a way to create a tied hash with specific overridden behaviour without having to create a new class to do it. A tied hash with no methods overridden is functionally equivalent to a normal hash.

This module is a helper for installing, reading and finding configuration file locations. File::ConfigDir is a module to help out when Perl modules (especially applications) need to read and store configuration files from more than one location.

IO::All combines all of the best Perl IO modules into a single nifty object oriented interface to greatly simplify your everyday Perl IO idioms. It exports a single function called io, which returns a new IO::All object. And that object can do it all!

This module provides a clone() method which makes recursive copies of nested hash, array, scalar and reference types, including tied variables and objects.

Module::Refresh provides ways to refresh %INC files when updated on disk.

This module exports methods useful for factory classes.

Module::Find lets you find and use modules in categories. This can be useful for auto-detecting driver or plugin modules. You can differentiate between looking in the category itself or in all subcategories.

lib::relative module proposes a more straightforward method than adding a path to @INC: take a path relative to the current file, absolutize it, and add it to @INC.

A Sub::Override module that makes it easy to override subroutines. Particularly useful for mocking in tests.

This module provides tools to deal with International Standard Music Numbers.

Filesys::Notify::Simple is a simple but unified interface to get notifications of changes to a given file system path. It uses inotify2 on Linux, fsevents on OS X, kqueue on FreeBSD, and FindFirstChangeNotification on Windows if they're installed, and falls back to a full directory scan if none of these are available.

Parallel::ForkManager is intended for use in operations that can be done in parallel where the number of processes to be forked off should be limited.

PLS is a Perl language server that implements a subset of the Language Server Protocol for the Perl language. Features currently implemented are:

• Go to definition (for packages, subroutines, and variables)

• Listing all symbols in a document

• Hovering to show documentation

• Signature help (showing parameters for a function as you type)

• Formatting

• Range formatting

• Auto-completion

• Syntax checking

• Linting (using perlcritic)

• Sorting imports

To use this language with Emacs, you can configure Eglot like so:

(add-hook 'perl-mode-hook 'eglot-ensure)
(setq eglot-server-programs '((perl-mode . ("pls"))))

Strictures turns on strict and make all warnings fatal when run from within a source-controlled directory.

PPI::XS provides (minor) XS acceleration for PPI.

MooX::HandlesVia is an extension of Moo's handles attribute functionality. It provides a means of proxying functionality from an external class to the given attribute.

A pure Perl implementation of the RC4 algorithm.

This package provides tools for inspecting subroutines in Perl.

This module provides a small, fast utility for working with file paths.