This module is a suite of tools for implementing DMARC. It adheres to the 2013 DMARC draft, intending to implement every MUST and every SHOULD.

URI::Nested provides support for nested URIs, where the scheme is a prefix, and the remainder of the URI is another URI.

This module defines a format for database URIs, and provides a URI class to handle these.

This module looks up the Gravatar for any email address by constructing a URL to get the image from gravatar.com. A Gravatar is a Globally Recognized Avatar for a given email address. This allows you to have a global picture associated with your email address.

The package provides bindings for GNU Libidn, a C library for handling Internationalized Domain Names according to IDNA (RFC 3490), in a way very much inspired by Turbo Fredriksson's PHP-IDN.

Apache SpamAssassin is an anti-spam platform giving system administrators a filter to classify email and block spam (unsolicited bulk email). It uses a robust scoring framework and plug-ins to integrate a wide range of advanced heuristic and statistical analysis tests on email headers and body text including text analysis, Bayesian filtering, DNS blocklists, and collaborative filtering databases.

This package provides an old GeoIP database in the legacy .dat format. The data was collected before MaxMind changed the license and format of their databases. It is intended only as a compatibility package for SpamAssassin.

Back in the early days of the web, many people learned Perl because of a wonderful Perl library called CGI. It was simple enough to get started without knowing much about the language and powerful enough to keep you going, learning by doing was much fun. While most of the techniques used are outdated now, the idea behind it is not. Mojolicious is a new endeavor to implement this idea using modern technologies.

WWW::Pastebin::PastebinCom::Create provides functionality to paste on Pastebin without API keys.

CPAN::DistnameInfo uses heuristics to extract the distribution name and version from filenames.

This module implements a Singleton class from which other classes can be derived. By itself, the Class::Singleton module does very little other than manage the instantiation of a single object.

MooseX::Role::WithOverloading allows you to write a Moose::Role which defines overloaded operators and allows those overload methods to be composed into the classes/roles/instances it's compiled to, where plain Moose::Roles would lose the overloading.

Routines to manipulate defhash, a convention to define things more precisely and uniformly using a hash, in Perl.

Simply loading this module makes your constructors "strict". If your constructor is called with an attribute init argument that your class does not declare, then it calls Moose->throw_error().

File::Grep provides similar functionality as perl's builtin grep, map, and foreach commands, but iterating over a passed filelist instead of arrays. While trivial, this module can provide a quick dropin when such functionality is needed.

This module provides a file handle that hides the beginning of a file, by modifying the seek() and tell() calls.

This module provides user-defined Unicode properties that deal with width status of East Asian characters, as specified in Unicode® Standard Annex #11.

IPC::Cmd allows for the searching and execution of any binary on your system. It adheres to verbosity settings and is able to run interactively. It also has an option to capture output/error buffers.

Probe::Perl provides methods for obtaining information about the currently running perl interpreter. It originally began life as code in the Module::Build project, but has been externalized here for general use.

This module provides lexicon-handling modules to read from other localization formats, such as Gettext, Msgcat, and so on.

XString provides the B string helpers in one isolated package. Right now only cstring and perlstring are available.

This module provides a general-purpose date and datetime type for perl.

MooseX::NonMoose allows for easily subclassing non-Moose classes with Moose, taking care of the details connected with doing this, such as setting up proper inheritance from Moose::Object and installing (and inlining, at make_immutable time) a constructor that makes sure things like BUILD methods are called. It tries to be as non-intrusive as possible.

The inc::latest module helps bootstrap configure-time dependencies for CPAN distributions. These dependencies get bundled into the inc directory within a distribution and are used by Makefile.PL or Build.PL.