Statistics::Distributions calculates percentage points (5 significant digits) of the u (standard normal) distribution, the student's t distribution, the chi-square distribution and the F distribution. It can also calculate the upper probability (5 significant digits) of the u (standard normal), the chi-square, the t and the F distribution.

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.

The Digest::CRC module calculates CRC sums of all sorts. It contains wrapper functions with the correct parameters for CRC-CCITT, CRC-16 and CRC-32.

Log::Log4perl lets you remote-control and fine-tune the logging behaviour of your system from the outside. It implements the widely popular (Java-based) Log4j logging package in pure Perl.

This module understands the ICal date/time and duration formats, as defined in RFC 2445. It can be used to parse these formats in order to create the appropriate objects.

This module provides a Perl interface to the iconv() codeset conversion function, as defined by the Single UNIX Specification. For more details see the POD documentation embedded in the file Iconv.pm, which will also be installed as Text::Iconv(3) man page.

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

Hook::LexWrap allows you to install a pre- or post-wrapper (or both) around an existing subroutine. Unlike other modules that provide this capacity (e.g., Hook::PreAndPost and Hook::WrapSub), Hook::LexWrap implements wrappers in such a way that the standard caller function works correctly within the wrapped subroutine.

This module converts Perl data structures to JSON and vice versa.

This module understands the formats used by PostgreSQL for its DATE, TIME, TIMESTAMP, and INTERVAL data types. It can be used to parse these formats in order to create DateTime or DateTime::Duration objects, and it can take a DateTime or DateTime::Duration object and produce a string representing it in a format accepted by PostgreSQL.

This class lets you build groups of accessors that will call different getters and setters.

Given a list of scalars or reference variables, Data::Dumper writes out their contents in Perl syntax. The references can also be objects. The content of each variable is output in a single Perl statement. It handles self-referential structures correctly.

Safe::Hole can execute outside defined subroutines in the original main compartment from the Safe compartment.

Date::Calc::XS is an XS wrapper and C library plug-in for Date::Calc.

Sometimes you need to test what happens when a given module is not installed. This module provides a way of temporarily hiding installed modules from perl's require mechanism. The Module::Mask object adds itself to @INC and blocks require calls to restricted modules.

This module is an alternative to String::Trim. Instead of a single trim function, this module provides several from which you can choose on, depending on your needs.

The Time::Warp module offers developers control over the measurement of time.

This module provides $CWD and @CWD as alternatives to chdir().

DateTime::Format::ISO8601 is a DateTime extension that parses almost all ISO8601 date and time formats.

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.

This package provides some compilation helpers so you can link Fortran libraries into C libraries.

This Perl module implements Future, an object representing an operation that is currently in progress, or has recently completed. It can be used in a variety of ways to manage the flow of control, and data, through an asynchronous program.

This module allows you to wrap OP check callbacks.

This package provides a data pack for Business::ISBN. These data are generated from the RangeMessage.xml file provided by the ISBN Agency.