MIME::Charset provides information about character sets used for MIME messages on Internet.

Term::ProgressBar is a wonderful module for showing progress bars on the terminal. This module acts very much like that module when it is run interactively. However, when it is not run interactively (for example, as a cron job) then it does not show the progress bar.

The File::LibMagic module is a simple perl interface to libmagic from the file package.

Data::UUID provides a framework for generating Universally Unique Identifiers (UUIDs), also known as Globally Unique Identifiers (GUIDs). A UUID is 128 bits long, and is guaranteed to be different from all other UUIDs/GUIDs generated until 3400 CE.

Regexp patterns related to DefHash, a convention to define things more precisely and uniformly using a hash.

This Perl module provides Chinese encodings that are not part of Perl by default, including "BIG5-1984", "BIG5-2003", "BIG5PLUS", "BIG5EXT", "CCCII", "EUC-TW", "CNS11643-*", "GB18030", and "UNISYS".

This module acts as a layer between Exporter and modules which consume exports. It is feature-compatible with Exporter, plus some much needed extras. You can use this to import symbols from any exporter that follows Exporters specification. The exporter modules themselves do not need to use or inherit from the Exporter module, they just need to set @EXPORT and/or other variables.

Exporter::Declare is a meta-driven exporting tool. It tries to adopt all the good features of other exporting tools, while replacing bad interfaces. Exporter::Declare also provides hooks that allow you to add options and arguments for import. Exporter::Declare's meta-driven system allows for top-notch introspection.

This module facilitates using Moose or Mouse modules without changing the code. By default, Mouse will be provided to libraries, unless Moose is already loaded, or explicitly requested by the end-user. End users can force the decision of which backend to use by setting the environment variable ANY_MOOSE to be Moose or Mouse.

Log::Any::Adapter::Log4perl provides a Log::Any adapter using Log::Log4perl for logging.

This module implements most of `strptime(3)`, the POSIX function that is the reverse of `strftime(3)`, for `DateTime`. While `strftime` takes a `DateTime` and a pattern and returns a string, `strptime` takes a string and a pattern and returns the `DateTime` object associated.

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.

String::Format lets you define arbitrary printf-like format sequences to be expanded. This module would be most useful in configuration files and reporting tools, where the results of a query need to be formatted in a particular way. It was inspired by mutt's .

This package provides a selection of regular expression subroutines including is_regexp, regexp_seen_evals, regexp_is_foreign, regexp_is_anchored, serialize_regexp, and deserialize_regexp.

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.

Set::Object provides efficient sets, unordered collections of Perl objects without duplicates for scalars and references.

This module abstracts out the process of choosing one of several underlying implementations for a module. This can be used to provide XS and pure Perl implementations of a module, or it could be used to load an implementation for a given OS or any other case of needing to provide multiple implementations.

Capture::Tiny provides a simple, portable way to capture almost anything sent to STDOUT or STDERR, regardless of whether it comes from Perl, from XS code or from an external program. Optionally, output can be teed so that it is captured while being passed through to the original file handles.

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.

This module has 3 functions: one to copy files only, one to copy directories only, and one to do either depending on the argument's type.

Unicode::LineBreak implements the line breaking algorithm described in Unicode Standard Annex #14. The East_Asian_Width property defined by Annex #11 is used to determine breaking positions.

Module::Build::XSUtil is subclass of Module::Build for support building XS modules.

This is a list of a new parameters in the Module::Build::new method:

1. needs_compiler_c99: This option checks C99 compiler availability.

2. needs_compiler_cpp: This option checks C++ compiler availability. Can also pass extra_compiler_flags and extra_linker_flags for C++.

3. generate_ppport_h: Generate ppport.h by Devel::PPPort.

4. generate_xshelper_h: Generate xshelper.h which is a helper header file to include EXTERN.h, perl.h, XSUB.h and ppport.h, and defines some portability stuff which are not supported by ppport.h.

   It is ported from Module::Install::XSUtil.

5. cc_warnings: Toggle compiler warnings. Enabled by default.

6. -g options: Invoke Build.PL with -g to enable debug options.

PPIX::QuoteLike parses Perl string literals and things that are reasonably like string literals. Its real reason for being is to find interpolated variables for Perl::Critic policies and similar code.

You use Tie::Cycle to go through a list over and over again. Once you get to the end of the list, you go back to the beginning.