Determine the locale encoding

https://metacpan.org/release/Encode-Locale

Error/exception handling in object-oriented programming style

https://metacpan.org/release/Error

Safely and cleanly create closures via string eval

https://metacpan.org/release/Eval-Closure

Real exception classes in Perl

https://metacpan.org/release/Exception-Class

Lightweight exporting of functions and variables

https://metacpan.org/pod/Exporter::Lite

Exporter with features of Sub::Exporter but only core dependencies

https://metacpan.org/release/Exporter-Tiny

Compile and link C code for Perl modules

https://metacpan.org/release/ExtUtils-CBuilder

Configure-time utilities for using C headers, libraries, OS features

https://metacpan.org/release/ExtUtils-CChecker

Wrapper for perl configuration

https://metacpan.org/release/ExtUtils-Config

Easily build XS extensions that depend on XS extensions

http://search.cpan.org/dist/ExtUtils-Depends/

Various portability utilities for module builders

https://metacpan.org/release/ExtUtils-Helpers

Build.PL install path logic made easy

https://metacpan.org/release/ExtUtils-InstallPaths

Designed to write a Makefile for an extension module

https://metacpan.org/release/ExtUtils-MakeMaker

Cpanfile support for ExtUtils::MakeMaker

https://metacpan.org/release/ExtUtils-MakeMaker-CPANfile

Converts Perl XS code into C code

https://metacpan.org/release/ExtUtils-ParseXS

Simplistic interface to pkg-config

https://metacpan.org/release/ExtUtils-PkgConfig

Autogenerating XS-glue Code

https://metacpan.org/release/ExtUtils-XSBuilder

Modules for perl5, for enabling FastCGI support in CGI scripts

https://metacpan.org/release/FCGI

Functions for managing FastCGI applications

https://metacpan.org/release/FCGI-ProcManager

Make try/catch syntax available

https://metacpan.org/release/Feature-Compat-Try

Use the freedesktop basedir spec

https://metacpan.org/release/File-BaseDir

Perl extension for recursively copying files and directories

https://metacpan.org/release/File-Copy-Recursive

Recursive copying of files and directories

https://metacpan.org/release/File-Copy-Recursive-Reduced

Object to handle desktop files

https://metacpan.org/release/File-DesktopEntry

Generic file fetching mechanism

https://metacpan.org/release/File-Fetch

Object oriented File::Find replacement

https://metacpan.org/release/File-Find-Object

Alternative interface to File::Find

https://metacpan.org/release/File-Find-Rule

Common rules for searching for Perl things

https://metacpan.org/release/File-Find-Rule-Perl

Get home directory for self or other users

http://search.cpan.org/dist/File-HomeDir/

Parse directory listings

https://metacpan.org/release/File-Listing

Determine file type

https://metacpan.org/release/File-MimeInfo

File::NFSLock - perl module to do NFS (or not) locking

http://search.cpan.org/dist/File-NFSLock/

Perl module to read file backwards by lines

https://metacpan.org/release/File-ReadBackwards

Perl5 module to easily removes files and directories

http://search.cpan.org/dist/File-Remove/

Locate per-dist and per-module shared files

https://metacpan.org/release/File-ShareDir

Install read-only data files from a distribution

https://metacpan.org/release/File-ShareDir-Install

Perl5 module for single call read & write file routines

https://metacpan.org/release/File-Slurp

Simple, sane and efficient module to slurp a file

https://metacpan.org/pod/File::Slurper

Perl Module to read the end of a file as it\x27s appended to

https://metacpan.org/release/File-Tail

Perl5 module to generate temporary files or directories safely

http://search.cpan.org/dist/File-Temp/

Determine file type using magic

https://metacpan.org/release/File-Type

Portable implementation of which(1) in Perl

https://metacpan.org/release/File-Which

More sensible way to change directories

https://metacpan.org/release/File-chdir

File::pushd - temporary chdir for a limited scope

https://metacpan.org/release/File-pushd

Module to determine if a filehandle is opened for reading, writing

https://metacpan.org/release/FileHandle-Fmode

Perl extension for simple and dumb file system watcher

https://metacpan.org/release/Filesys-Notify-Simple

Perl extension for statvfs() and fstatvfs()

https://metacpan.org/release/Filesys-Statvfs

Number of source filters for perl5 programs

http://search.cpan.org/dist/Filter/

Interface to Adobe font metrics files

https://metacpan.org/release/Font-AFM

Perl module for TrueType font hacking

https://metacpan.org/release/Font-TTF