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comp.lang.perl The Perl 5 Module List (Reusable Software)

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Tim Bunce

Jun 25, 1995, 3:00:00 AM6/25/95
Posted-By: auto-faq
Archive-name: perl-faq/module-list

The Perl 5 Module List Maintained by Tim Bunce
---------------------- <>
$Revision: 2.9 $
Contents $Date: 1995/06/21 09:59:33 $

Playing Your Part
How To Get an More Recent Copy
Editorial Information

Part 1 - Modules: Creation, Use and Abuse

1) Perl 5 Module Terminology
2) Guidelines for Module Creation
3) Guidelines for Converting Perl 4 Library Scripts into Modules
4) Guidelines for Reusing Application Code

Part 2 - The Perl 5 Module List

1) Module Listing Format
2) Perl Core Modules and Perl Language Extensions
3) Development Support
4) Operating System Interfaces
5) Networking, Device Control (modems) and InterProcess Communication
6) ! Data Types and Data Type Utilities
7) Database Interfaces
8) ! User Interfaces
9) Interfaces to / Emulations of Other Programming Languages
10) File Names, File Systems, File Locking and File Handles
11) Text Processing, Parsing and Searching
12) Option, Argument and Parameter Processing
13) Internationalization and Locale
14) Security and Encryption
15) World Wide Web, HTML, HTTP, CGI, MIME
16) Server and Daemon Utilities
17) Archiving and Compression
18) Image, Pixmap and Bitmap Manipulation, Drawing and Graphing
19) Mail and Usenet News
20)! Miscellaneous Modules

Part 3 - Big Projects Registry

1) Introduction
2) Perl Compiler
3) Safe Perl
4) Multi-threading
5) Object Management Group Interface Definition Language

Part 4 - Who's Who and What's Where

1) Information / Contact Reference Details
2) Perl Frequently Asked Questions (FAQ) Files
3) Perl Archives

Key: '+' indicates a new item or section,
'!' indicates a changed item or section.



This document is a semi-formal list of Perl 5 Modules. The Perl 4
concept of packages has been extended in Perl 5 and a new standardised
form of reusable software component has been defined: the Module.

Perl 5 Modules typically conform to certain guidelines which make them
easier to use, reuse, integrate and extend.

This list will posted to comp.lang.perl.announce and comp.answers on a
semi-regular basis. It has two key aims:

1. FOR DEVELOPERS: To change duplication of effort into cooperation.

2. FOR USERS: To quickly locate existing software which can be reused.

This list includes the Perl 5 standard modules, other completed modules,
work-in-progress modules and would-be-nice-to-have ideas for modules.
It also includes guidelines for those wishing to create new modules
including how to name them.

Playing Your Part

Perl is a huge collaborative effort. Everyone who uses perl is
benefiting from the contributions of many hundreds, maybe thousands, of
people. How much time has perl saved you since you started using it?

Do you have any modules you could share with others? For example, you
may have some perl4 scripts from which generally useful, and reusable,
modules could be extracted. There may be many people who would find
your work very useful. Please play you part and contribute to the Perl
community where you can. [ end of sermon :-]

Help save the world! Please submit new entries and updates to me so I
can keep this list up-to-date. I would prefer changes to be submitted
as context diff's (or just plain diff if your diff does not have a
context diff option) by email to No tabs please.

How To Get a More Recent Copy

This Module List is posted to comp.lang.perl.announce, comp.answers and
news.answers bi-weekly with a long expiry time (over a month). The
first place to look for a more recent copy is therefore your own Usenet
spool area.

You should be able to get a copy from one of these places:
(please let me know about any others)

Editorial Information

This document is Copyright (c) 1995 by Tim Bunce. All rights reserved.
Permission to distribute this document, in full or part, via electronic
means (emailed, posted or archived) or printed copy is granted
providing that no charges are involved, reasonable attempt is made to
use the most current version, and all credits and copyright notices are
retained. Requests for other distribution rights, including
incorporation in commercial products, such as books, magazine articles,
or CD-ROMs should be made to

Disclaimer: The content of this document is simply a collection of
information gathered from many sources with little or no checking.
There are NO warranties with regard to this information or its use.


Part 1 - Modules: Creation, Use and Abuse

1) Perl 5 Module Terminology (a larry-terminology-mini-tutorial)

Perl 5 implements a class using a package, but the presence of a
package doesn't imply the presence of a class. A package is just a
namespace. A class is a package that provides subroutines that can be
used as methods. A method is just a subroutine that expects, as its
first argument, either the name of a package (for "static" methods),
or a reference to something (for "virtual" methods).

A module is a file that (by convention) provides a class of the same
name (sans the .pm), plus an import method in that class that can be
called to fetch exported symbols. This module may implement some of
its methods by loading dynamic C or C++ objects, but that should be
totally transparent to the user of the module. Likewise, the module
might set up an AUTOLOAD function to slurp in subroutine definitions on
demand, but this is also transparent. Only the .pm file is required to

2) Guidelines for Module Creation

2.1 Do similar modules already exist in some form?

If so, please try to reuse the existing modules either in whole or
by inheriting useful features into a new class. If this is not
practical try to get together with the module authors to work on
extending or enhancing the functionality of the existing modules.
A perfect example is the plethora of packages in perl4 for dealing
with command line options.

If you are writing a module to expand an already existing set of
modules, please coordinate with the author of the package. It
helps if you follow the same naming scheme and module interaction
scheme as the original author.

2.2 Try to design the new module to be easy to extend and reuse.

Use blessed references. Use the two argument form of bless to bless
into the class name given as the first parameter of the constructor,
e.g., sub new { my($class) = @_; return bless {}, $class; }

Pass arrays as references so more parameters can be added later
(it's also faster). Convert functions into methods where
appropriate. Split large methods into smaller more flexible ones.
Inherit methods from other modules if appropriate.

Avoid class name tests like: die "Invalid" unless ref $ref eq 'FOO'.
Generally you can delete the "eq 'FOO'" part with no harm at all.
Let the objects look after themselves! Generally, avoid hardwired
class names as far as possible.

Avoid $r->Class::func() where using @ISA=qw(... Class ...) and
$r->func() would work (see perlbot man page for more details).

Use autosplit so little used or newly added functions won't be a
burden to programs which don't use them. Add test functions to
the module after __END__ either using AutoSplit or by saying:
eval join('',<main::DATA>) || die $@ unless caller();

Does your module pass the 'empty sub-class' test? If you say
"@SUBCLASS::ISA = qw(YOURCLASS);" your applications should be able
to use SUBCLASS in exactly the same way as YOURCLASS. For example,
does your application still work if you change: $obj = new YOURCLASS;
into: $obj = new SUBCLASS; ?

Avoid keeping any state information in your packages. It makes it
difficult for multiple other packages to use yours. Keep state
information in objects.

Always use -w. Try to "use strict;" (or "use strict qw(...);").
Remember that you can add "no strict qw(...);" to individual blocks
of code which need less strictness. Always use -w. Always use -w!
Follow the guidelines in the perlstyle(1) manual.

2.3 Select what to export.

Do NOT export method names!
Do NOT export anything else by default without a good reason!

Exports pollute the namespace of the module user. If you must
export try to use @EXPORT_OK in preference to @EXPORT and avoid
short or common names to reduce the risk of name clashes.

Generally anything not exported is still accessible from outside the
module using the ModuleName::item_name (or $blessed_ref->method)
syntax. By convention you can use a leading underscore on names to
informally indicate that they are 'internal' and not for public use.

(It is actually possible to get private functions by saying:
my $subref = sub { ... }; &$subref; But there's no way to call that
directly as a method, since a method must have a name in the symbol

As a general rule, if the module is trying to be object oriented
then export nothing. If it's just a collection of functions then
@EXPORT_OK anything but use @EXPORT with caution.

2.4 Select a name for the module.

This name should be as descriptive, accurate and complete as
possible. Avoid any risk of ambiguity. Always try to use two or
more whole words. Generally the name should reflect what the module
does rather than how it does it. Please use nested module names to
informally group or categorise a module.

Having 57 modules all called Sort will not make life easy for anyone
(though having 23 called Sort::Quick is only marginally better :-).
Imagine someone trying to install your module alongside many others.
If in any doubt ask for suggestions in comp.lang.perl.misc.

If you are developing a suite of related modules/classes it's good
practice to use nested classes with a common prefix as this will
avoid namespace clashes. For example: Xyz::Control, Xyz::View,
Xyz::Model etc. Use the modules in this list as a naming guide.

If adding a new module to a set, follow the original author's
standards for naming modules and the interface to methods in
those modules.

To be portable each component of a module name should be limited to
11 characters. If it might be used on DOS then try to ensure each is
unique in the first 8 characters. Nested modules make this easier.

2.5 Have you got it right?

How do you know that you've made the right decisions? Have you
picked an interface design that will cause problems later? Have
you picked the most appropriate name? Do you have any questions?

The best way to know for sure, and pick up many helpful suggestions,
is to ask someone who knows. Comp.lang.perl is read by just about
all the people who develop modules and it's the best place to ask.

All you need to do is post a short summary of the module, its
purpose and interfaces. A few lines on each of the main methods is
probably enough. (If you post the whole module it might be ignored
by busy people - generally the very people you want to read it!)

Don't worry about posting if you can't say when the module will be
ready - just say so in the message. It might be worth inviting
others to help you, they may be able to complete it for you!

2.6 README and other Additional Files.

It's well known that software developers usually fully document the
software they write. If, however, the world is in urgent need of
your software and there is not enough time to write the full
documentation please at least provide a README file containing:

A description of the module/package/extension etc.
A copyright notice - see below.
Prerequisites - what else you may need to have.
How to build it - possible changes to Makefile.PL etc.
How to install it.
Recent changes in this release, especially incompatibilities
Changes / enhancements you plan to make in the future.

If the README file seems to be getting too large you may wish to
split out some of the sections into separate files: INSTALL,
Copying, ToDo etc.

2.7 Adding a Copyright Notice.

How you choose to licence your work is a personal decision.
The general mechanism is to assert your Copyright and then make
a declaration of how others may copy/use/modify your work.

Perl, for example, is supplied with two types of licence: The GNU
GPL and The Artistic License (see the files README, Copying and
Artistic). Larry has good reasons for NOT just using the GNU GPL.

My personal recommendation, out of respect for Larry, Perl and the
perl community at large is to simply state something like:

Copyright (c) 1995 Your Name. All rights reserved.
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.

This statement should at least appear in the README file. You may
also wish to include it in a Copying file and your source files.

2.8 Give the module a version/issue/release number.

Add a function or method to retrieve the number. Use the number in
announcements and archive file names when releasing the module
(ModuleName-1.02.tar.Z). See for details.
It's a good idea to use two digits after the decimal point.

2.9 How to release and distribute a module.

It's good idea to post an announcement of the availability of your
module (or the module itself if small) to the comp.lang.perl.announce
Usenet newsgroup. This will at least ensure very wide once-off

If possible you should place the module into a major ftp archive and
include details of it's location in your announcement.

Some notes about ftp archives: Please use a long descriptive file
name which includes the version number. Most incoming directories
will not be readable/listable, i.e., you won't be able to see your
file after uploading it. Remember to send your email notification
message as soon as possible after uploading else your file may get
deleted automatically. Allow time for the file to be processed
and/or check the file has been processed before announcing its

Some FTP Archives for Perl Modules:

Upload to:

Please remember to send me an updated entry for the Module list!

2.10 Take care when changing a released module.

Always strive to remain compatible with previous released versions
(see 2.2 above) Otherwise try to add a mechanism to revert to the
old behaviour if people rely on it. Document incompatible changes.

3) Guidelines for Converting Perl 4 Library Scripts into Modules

3.1 There is no requirement to convert anything.

If it ain't broke, don't fix it! Perl 4 library scripts should
continue to work with no problems. You may need to make some minor
changes (like escaping non-array @'s in double quoted strings) but
there is no need to convert a .pl file into a Module for just that.

3.2 Consider the implications.

All the perl applications which make use of the script will need to
be changed (slightly) if the script is converted into a module. Is
it worth it unless you plan to make other changes at the same time?

3.3 Make the most of the opportunity.

If you are going to convert the script to a module you can use the
opportunity to redesign the interface. The 'Guidelines for Module
Creation' above include many of the issues you should consider.

3.4 The pl2pm utility will get you started.

This utility will read *.pl files (given as parameters) and write
corresponding *.pm files. The pl2pm utilities does the following:
- Adds the standard Module prologue lines
- Converts package specifiers from ' to ::
- Converts die(...) to croak(...)
- Several other minor changes
Being a mechanical process pl2pm is not bullet proof. The converted
code will need careful checking, especially any package statements.
Don't delete the original .pl file till the new .pm one works!

4) Guidelines for Reusing Application Code

4.1 Complete applications rarely belong in the Perl Module Library.

4.2 Many applications contain some perl code which could be reused.
Help save the world! Share your code in a form that makes it easy
to reuse.

4.3 Break-out the reusable code into one or more separate module files.

4.4 Take the opportunity to reconsider and redesign the interfaces.

4.5 In some cases the 'application' can then be reduced to a small
fragment of code built on top of the reusable modules. In these cases
the application could invoked as:
perl -e 'use Module::Name; method(@ARGV)' ...
or perl -mModule::Name ... (in perl5.002?)


Part 2 - The Perl 5 Module List

The remainder of this document is divided up into sections. Each
section deals with a particular topic and lists all known modules
related to that topic. Modules are only listed in one section so
check all sections that might related to your particular needs.

All the information corresponds to the latest updates I have received.
I don't record the version number or release dates of the listed
Modules. Nor do I record the locations of these Modules. Consult the
contact, try the usual perl archive sites or ask in comp.lang.perl.misc.
Please do *not* ask me directly, I simply don't have the time. Sorry.

1) Module Listing Format

Each Module listing is very short. The main goal is to simply publish
the existence of the modules, or ideas for modules, and enough contact
information for you to find out more. Each listing includes some
characters which convey (approximate) basic status information.

For example:

Name DSLI Description Info
------------- ---- -------------------------------------------- -----
Fcntl Sdcf Defines fcntl() constants (see File::Lock) JHI

Where the 'DSLI' characters have the following meanings:

D - Development Stage (Note: *NO IMPLIED TIMESCALES*!):
i - Idea, listed to gain consensus or as a placeholder
c - under construction but pre-alpha (not yet released)
a/b - Alpha/Beta testing
R - Released
M - Mature (no rigorous definition)
S - Standard, supplied with Perl 5

S - Support Level:
m - Mailing-list
d - Developer
u - Usenet newsgroup comp.lang.perl.misc
n - None known, try comp.lang.perl.misc

L - Language Used:
p - Perl-only, no compiler needed, should be platform independent
c - C and perl, a C compiler will be needed
+ - C++ and perl, a C++ compiler will be needed
o - perl and another language other than C or C++

I - Interface Style
f - plain Functions, no references used
r - some use of unblessed References or ties
O - Object oriented using blessed references and/or inheritance

Where letters are missing they can usually be inferred from the
others. For example 'i' implies 'id', 'S' implies 'Su'.

The Info column gives a contact reference 'tag'. Lookup this tag in the
"Information / Contact Reference Details" section in Pert 3 of this
document. If no contact is given always try asking in comp.lang.perl.misc.

Most Modules are nested in categories such as IPC::Open2 and IPC::Open3.
These are shown as 'IPC::' on one line then each module listed below
with a '::' prefix.

Ideas For Adoption

Modules listed as in the 'i' Development Stage with no contact
reference are ideas without an owner. Feel free to 'adopt' these but
please let me know so that I can update the list and thus inform anyone
else who might be interested. Adoption simply means that you either
hope to implement the module one day or would like to cooperate with
anyone else who might be interested in implementing it.


Similarly, if an idea that interests you has been adopted by someone
please contact them so you can share ideas. Just because an idea has
been adopted does NOT imply that it's going to be implemented. Just
because a module is listed and being implemented does NOT mean it'll
get finised. Waiting silently in the hope that the Module will appear
one day is unlikely to be fruitful! Offer to help. Cooperate. Pool your
efforts. Go on, try it!

The same applies to modules in all states. Most modules are developed
in limited spare time. If you're interested in a module don't just wait
for it to happen, offer to help!

Module developers should feel free to announce incomplete work early.
If you're not going to be able to spend much time on something then say
so. If you invite cooperation maybe someone will implement it for you!


2) Perl Core Modules and Perl Language Extensions

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
CORE Suc Internal base class for native functions
UNIVERSAL Suc Internal universal base-class
AutoLoader Sup Automatic perl module method loader
DynaLoader Suc Dynamic loader for shared libraries
Exporter Sup Implements default import method for modules
Carp Sup Throw exceptions outside current package
Config Sup Stores details of perl build configuration
English Sup Defines English names for special variables
strict Sup Controls averments (similar to pragmas)
integer Sup Controls float vs. integer arithmetic
less Sup Controls optimisations: 'use less memory;'
subs Sup "use subs qw(x y)" is short for "sub x; sub y;"
sigtrap Sup For trapping an abort and giving a traceback
TieHash Sup Base class for implementing tied hashes

Multithreading for Perl:

Plthread i Multithreading at Perl level (not O/S level) MICB

Source Code Filters (currently requires 'filter' patches to Perl5.001):

::cpp adcf Filters perl source through C preprocessor PMQS


3) Development Support

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
AutoSplit Supf Splits modules into files for AutoLoader
Benchmark Supf Easy way to time fragments of perl code
AddINC adpf Easy way to manipulate @INC via use GBARR
DoWhatIWant i Does what you want without even asking

::MakeMaker SupO Writes Makefiles for extensions
::DynaGlue i Utilities/glue code for C<->Perl interfaces
::Peek adcf Interface to internal sv_dump and sv_peek ILYAZ

::Harness Sup Executes perl-style tests

::DProf bdcf Execution profiler (excellent) DMR
::Debug i Function and class debugging support
::DumpStack Rupf Dumping of the current function stack JACKS
::Usage bupr Type and range checking on subroutine args JACKS

::RCS idpi Interface layer over RCS functionality RJRAY
::RCE idci Perl layer over RCE C API RJRAY


4) Operating System Interfaces

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
POSIX SupO An interface to most (all?) of POSIX.1
Fcntl Sdcf Defines fcntl() constants (see File::Lock) JHI
Ioctl adcf Defines ioctl() constants KJALB
Errno i Constants from <errno.h> EACCES, ENOENT etc JHI

::Remote adpf getrusage(), s/getrlimit(), s/getpriority() JHI
::HostIdent adpf s/gethostname(), s/gethostid() JHI

::Hostname Supf Implements a portable hostname function
::Syslog Supf Provides same functionality as BSD syslog
::AlarmCall Rupf Timeout on any sub. Allows nested alarms JACKS

::dfent adpf By-name interface TOMC
::gmtime adpf By-name interface TOMC
::grent adpf By-name interface TOMC
::hostent adpf By-name interface TOMC
::localtime adpf By-name interface TOMC
::mntent adpf By-name interface TOMC
::netent adpf By-name interface TOMC
::protoent adpf By-name interface TOMC
::pwent adpf By-name interface TOMC
::servent adpf By-name interface TOMC
::stat adpf By-name interface TOMC
::statfs adpf By-name interface TOMC
::times adpf By-name interface TOMC

::SysCalls adcf MSDOS interface (interrupts, port I/O) DMO

::SysCalls cdcf SGI-specific system calls AMOSS
::GL adcr SGI's Iris GL library AMOSS
::FM adcr SGI's Font Management library AMOSS

::SysCalls i VMS-specific system calls CBAIL
::Filespec Sdcf VMS and Unix file name syntax CBAIL

::NetInfo idco NeXTStep's NetInfo (like ONC NIS) PGUEN


5) Networking, Device Control (modems) and InterProcess Communication

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
Socket Sucf Defines all socket-related constants

::Ping Supf Implements TCP/IP ping (currently only echo) PMQS
::IRC i Internet Relay Chat interface MRG
::FTP idpf Implements File Transfer Protocol interface GSPAF
::Telnet i GBARR
::SOCKS i TCP/IP access through firewalls using SOCKS WSCOT
::NIS cdcO Interface to Sun's NIS RIK
::NISPlus cdcO Interface to Sun's NIS+ RIK

::Gen adcO Generic support for socket usage SPIDB
::Inet adcO Internet (IP) socket usage SPIDB
::TCP adcO TCP-specific socket usage SPIDB
::UDP cdcO UDP-specific socket usage SPIDB
::Dnet cdcO DECnet-specific socket usage SPIDB

::Open2 Supf
::Open3 Supf
::Chat2 ? Out-of-service during refit!
::SysV i shared memory, semaphores, messages etc JHI
::Mmap adcf Interface to Unix's mmap() shared memory MICB

::ONC i Open Network Computing (Sun) RPC interface PKUTS
::DCE i Distributed Computing Environment (OSF) RPCs

Chat2 adpf Basic port of (see also IPC::Chat2) GBARR

Proxy adpO Transport-independent remote processing MICB
::Tk aucO Tk transport class for Proxy (part of Tk) MICB

ToolTalk adcr Interface to the ToolTalk messaging service MARCP


6) Data Types and Data Type Utilities (see also Database Interfaces)

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
::BigInt SupO Arbitrary size integer math package MARKB
::BigFloat ?
::BigRat ?
::Complex adpO Complex number data type DNAD
::IEEE i Interface to ANSI/IEEE Std 754-1985 funcs
::Pari adcf Interface to the PARI library ILYAZ

::Vec idp Implement array using vec() LWALL
::Substr idp Implement array using substr() LWALL
::Virtual idp Implement array using a file LWALL

::Scalar adpO Implement Set of scalars (inc references) JHI

::GetDate adcf Yacc based free-format date parser in C TOMC
::GetDate adpf Byacc based free-format date parser in Perl GBARR
::CTime adpf Updated with mods for timezones GBARR
::Time idpO Lightweight normalised datetime data type TIMB
::Interval idpO Lightweight normalised interval data type TIMB

::Local Supf Implements timelocal() and timegm()
::Time adcf High resolution timers and time-of-day JHI

FreezeThaw bdpf Convert arbitrary objects to/from strings ILYAZ

::SubstrHash RdpO Very compact hash stored in a string LWALL
::ShiftSplice i Defines shift et al in terms of splice LWALL
::Mem adcO Bind perl variables to memory addresses PMQS
::File adpr Tie hash to files in a directory AMW
::IxHash adpO Indexed hash (array/hash composite) GSAR +
::Quick i Simple way to create ties TIMB
::Watch i Uses Tie::Quick to watch a variable TIMB

::Behavior adpf General behavior methods for classes JACKS
::Eroot bdpO Eternal Root - Object persistence DMR
::Template bdpr Struct/member template builder DMR

::Descriptive RdpO Descriptive statistical methods JKAST


7) Database Interfaces (see also Data Types)

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
DBI amcO Generic Database Interface (see DBD modules) DBPRL
::Oracle amcO Oracle Driver for DBI TIMB
::Ingres cmcO Ingres Driver for DBI TIMB
::Msql cdcO Msql Driver for DBI ANDK
::DB2 cdcO DB2 Driver for DBI MHM
::Sybase idcO Sybase Driver for DBI MEWP

Oraperl ampf Oraperl emulation interface for DBD::Oracle TIMB
Ingperl cmpf Ingperl emulation interface for DBD::Ingres TIMB

::DBlib adcO Sybase DBlibrary interface MEWP
::Sybperl adcf sybperl 1.0xx compatibility module MEWP
::CTlib cdcO Sybase CTlibrary intgerface MEWP

Msql adcf Mini-SQL, a light weight SQL database ANDK
Pg bdcf Postgress database interface MERGL

Tied Hash File Interfaces:

NDBM_File Suc Tie to NDBM files
DB_File Suc Tie to DB files PMQS
GDBM_File Suc Tie to GDBM files
SDBM_File Suc Tie to SDBM files
ODBM_File Suc Tie to ODBM files
AnyDBM_File Sup Uses first available *_File module above
DBZ_File adc Tie to dbz files (mainly for news history) IANPX

AsciiDB adp Generic text database parsing MICB
Stanza adp Text format database used by OSF and IBM JHI
NetCDF bmcr Interface to netCDF API for scientific data SEMM

DTREE cdcf Interface to Faircom DTREE multikey isam db JWAT


8) User Interfaces (Character and Graphical)

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
::Cap Supf Basic termcap: Tgetent, Tputs, Tgoto
::Info adpf Terminfo interface (currently just Tput) KJALB
::Complete Supf Tab word completion using stty raw
::ReadLine adcf GNU Readline, history and completion ILYAZ
::Control idpf Basic curses-type screen controls (gotxy) KJALB
::Read cdcf Terminal reading functions (getkey) KJALB
::Pseudo i Pseudo terminal (pty) functions
::Gnuplot adcf Draw vector graphics on terminals etc ILYAZ

Major Character User Interface Modules:

Curses adcO Character screen handling and windowing WPS
Perlmenu Mdpf Curses-based menu and template system SKUNZ
PV bmpO PerlVision curses windowing (OO widgets etc) PVML

Tk X-Windows User Interface Modules:

Tk bmcO Object oriented version of Tk v4 TKML
Tkperldb bmpf Graphical perl debugger interface TKML

::FileSelector bmpO A Fileselectorbox for choosing files TKML +

Other Major X-Windows User Interface Modules:

Sx adc Simple Athena widget interface FMC
Motif cdcf Simple Motif and Xt interface ERICA
Wcl i Interface to the Widget Creation Library TOMH
Fresco cd+O Interface to Fresco (post X11R6 version) BPETH


9) Interfaces to / Emulations of Other Programming Languages

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
Tcl RdcO Complete access to Tcl MICB
::Tk RdcO Complete access to Tk *via Tcl* MICB

::Prolog adpO An implementation of Prolog JACKS

SICStus adcO Interface to SICStus Prolog Runtime CBAIL

::NameList adpf Interface to FORTRAN NameList data SGEL


10) File Names, File Systems, File Locking and File Handles

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
::Path Supf File path and name utilities
::Basename Supf Return basename of a filename
::CheckTree Supf Check file/dir tree against a specification
::Find Supf Call func for every item in a directory tree
::Lock adcf File locking using flock() and lockf() JHI
::KGlob cdcf Filename globing (ksh style) TYEMQ
::Attrib idpO Get/set file attributes (stat) TYEMQ

Cwd Supf Current working directory functions
FileHandle SupO File handle manipulation functions


11) Text Processing, Parsing and Searching

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
::Abbrev Supf Builds hash of all possible abbreviations
::ParseWords Supf Parse strings containing shell-style quoting
::Soundex Supf Convert a string to a soundex value
::TeX cdpO TeX typesetting language input parser ILYAZ
::Trie adpf Find common heads and tails from strings ILYAZ

::Edit adpf Assorted handy text editing functions TOMC

::Dict Supf Search a dictionary ordered text file

::Element cdpO Build a SGML element structure tree LSTAF
::SP cd+O Interface to James Clark's Sp SGML parser DFD

::AFM adpf Parse Adobe Font Metric files GAAS


12) Option, Argument, Parameter and Configuration File Processing

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
::Std Supf Implements basic getopt and getopts
::Long Supf Advanced option handling JV
::Gnu adcf GNU form of long option handling WSCOT

ConfigReader cdpO Read directives from configuration file AMW


13) Internationalization and Locale

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
::Collate bdpr Locale based comparisons JHI
::WideMulti i Wide and multibyte character string JHI


14) Security and Encryption

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
DES adcf DES encryption (libdes) EAYNG
Des adcf DES encryption (libdes) MICB
MD5 adcf MD5 message digest algorithm NWINT
Kerberos adcf Kerberos IV authentication MICB
GSS i Generic Security Services API (RFC ????)


15) World Wide Web, HTML, HTTP, CGI, MIME etc (see Text Processing)

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
::URL RmpO Uniform Resource Locator objects LWWWP

::Base bmpO Complete HTTPD CGI Interface class CGIP
::MiniSvr bmpO Fork CGI app as a per-session mini server CGIP
::Request bmpO Parse CGI request and handle form fields CGIP
::Form ampf Form tools for interactive pages MGH
::UnixSocket cmcf Runs cgi in background through unix socket AMW

::* i

::* i

::HTTP cmpO Implement HyperText Transfer Protocol LWWWP
::Log i Parse Common Log File Format
::Robots i Parse /robots.txt file

::Header i Parse / construct MIME headers
::Handler i Base class for MIME content handlers
::Object i Base class for MIME decoded objects


16) Server and Daemon Utilities

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
Server Hierarchy of generic server classes

::BasicConfig RupO Configuration template class for servers JACKS

::Functions Rupf Utility functions for initializing servers JACKS
::Daemon Rupr Intializing a daemon server JACKS
::Pipe Rupr Intializing a server being piped to JACKS
::InetdService Rupr Intializing a server started from inetd JACKS

::EventDriven RupO Triggers objects on i/o, timers & interrupts JACKS

::MailPipe cup A process which accepts piped mail JACKS
::TcpDForking cup TCP daemon which forks clients JACKS
::TcpDMplx cup TCP daemon which multiplexes clients JACKS
::TcpISWFork cup TCP inetd wait process, forks clients JACKS
::TcpISWMplx cup TCP inetd wait process, multiplexes clients JACKS
::TcpISNowait cup TCP inetd nowait process JACKS
::UdpD cup UDP daemon JACKS
::UdpIS cup UDP inetd process JACKS

::Functions cdpf Utility functions for Inet socket handling JACKS
::Object cupO Basic Inet object JACKS
::TcpClientObj cupO A TCP client (connected) object JACKS
::TcpMasterObj cupO A TCP master (listening) object JACKS
::UdpObj cupO A UDP object JACKS

::Functions cupf Functions for handling files and mailboxes JACKS
::Object cupO Basic object JACKS
::DirQueue cupO Files queued in a directory JACKS
::MboxQueue cupO Mail queued in a mail box JACKS

::Functions cupf Functions for handling files and mailboxes JACKS
::Object cupO Basic mail object JACKS


17) Archiving and Compression

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
Zip cdcf Interface to the Info-Zip zlib library PMQS


18) Image, Pixmap and Bitmap Manipulation, Drawing and Graphing

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
PixDraw adcO Drawing and manipulating true color images KSB
GD adcO GIF editing/painting/manipulation LDS
PGPLOT Rdof PGPLOT plotting library - scientific graphs KGB


19) Mail and Usenet News

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
::Address adpf Manipulation of electronic mail addresses GBARR
::RFC822 adpO Functions for RFC822 address manipulations GBARR
::MIME adpO Extends Mail::RFC822 to understand MIME GBARR
::Send adpO Simple interface for sending mail GBARR
::SMTP i Protocol support including expn
::MH adcr MH mail interface MRG

::NNTPClient bdpO Support for clients of NNTP servers RVA


20) Miscellaneous Modules

Name DSLI Description Info
----------- ---- -------------------------------------------- -----
WAIS Rdcf Interface to the freeWAIS-sf libraries ULPFR
Pcap i An interface for LBL's packet capture lib AMOSS
Nexus cdcO Interface to Nexus (threads/ipc/processes) RDO
IXO i IXO alphanumeric pager protocol
Roman bdpf Convert Roman numbers to and from Arabic OZAWA
Archie Rdp Archie and WWW Gateway via Prospero protocol GBOSS +

::* i Utilities for molecular biology SEB


Part 3 - Big Projects Registry

1) Introduction

This section of the Module List is devoted to listing "Big Projects".
I don't want to define Big (or even Project) here. I hope the items
below speak for themselves. Almost all are just ideas, though some have
been dabbled with.

These are ideas for people with very strong skills and lots of time.
Please talk, and listen, to Larry _before_ starting to do any work on
projects which relate to the core implementation of Perl.

Ask not when these will be implemented but ask how you can help
implement them.

2) Items in the Todo File

The Todo supplied with Perl lists over 60 items in categories ranging
from "Would be nice to have" to "Vague possibilities".

Contacts: LWALL P5P

2) Perl Compiler

Part of the design of Perl 5 was to make it possible to write a
compiler for it. It's a possible master's thesis topic.

Related to this is the ability to save and load a 'flat' byte-code
representation of the compiled perl code. It would be translated back
into Perl's own internal form for speed.

Note that three different prototype Tcl compilers have recently been
announced in the comp.lang.tcl group! Anyone interested in this should
take a good look at the Java language from Sun

Contacts: LWALL P5P

3) Safe Perl

A mechanism to allow unknown/insecure perl code to be compiled and
executed in a finely controlled manner. An eventual aim is to enable
Perl Objects (data+code) to travel between applications (possibly
across networks). Similar to the existing Safe-Tcl (see

Contacts: LWALL MICB P5P

4) Multi-threading

This is really two projects. True threads (e.g., POSIX) using multiple
independant perl interpreter structures and simple timeslicing of
'tasks' within a single perl interpreter. True threads requires
operating system support or an external thread library, simple
timeslicing does not (and should be portable to all platforms).

Contacts: LWALL MICB P5P

5) Object Management Group Interface Definition Language and/or ILU

OMG's (Object Management Group) CORBA 1.1 (Common Object Request Broker
Architecture) specification provides the standard interface definition
between OMG-compliant objects. IDL (Interface Definition Language) is
the base mechanism for object interaction. The SunSoft OMG IDL CFE
(Compiler Front End) provides a complete framework for building CORBA
1.1-compliant preprocessors for OMG IDL. To use SunSoft OMG IDL CFE,
you must write a back-end; full instructions are included. A complete
compiler of IDL would translate IDL into client side and server side
routines for remote communication in the same manner as the currrent
Sun RPCL compiler. Several companies including Sunsoft are building
back ends to the CFE which translate IDL into target languages, e.g.
Pascal or C++, in the context of planned CORBA-compliant products.


7) Expand Tied Array Interface

LEN, PUSH, POP, SHIFT, UNSHIFT and a fallback to SPLICE are needed.
Complicated by very widespread use of arrays within perl internals.

Contacts: LWALL P5P

8) Tied File Handles

It is a long term goal to allow perl file handles to be tied. This will
probably be based on the sfio (Safe Fast IO) library.

Contacts: PMQS P5P LWALL


Part 4 - Who's Who and What's Where

1) Information / Contact Reference Details (in alphabetical order)

Ref Contact Details
----- --------------------------------------------------------------
AMOSS Amos Shapira <>
AMW Andrew Wilcox <>
ANDK Andreas Koenig <k...@otto.ww.TU-Berlin.DE>
BBUM Bill Bumgarner <>
BPETH Bill Petheram <>
CBAIL Charles Bailey <>
CGIP The CGI-Perl Developers mailing list <>
DBPRL DBperl mailing list. <>
DFD Dominic Dunlop <>
DMO Darryl Okahata <>
DMR Dean Roehrich <>
DNAD Dave Nadler <nadler@apphpp2>
EAYNG Eric Young <>
ERICA Eric Arnold <>
FMC Frederic Chauveau <>
GAAS Gisle Aas <>
GBARR Graham Barr <>
+ GBOSS Greg Bossert <>
+ GSAR Gurusamy Sarathy <>
GSPAF Gene Spafford <>
IANPX Ian Phillipps <>
ILYAZ Ilya Zakharevich <>
JACKS Jack Shirazi <>
JHI Jarkko Hietaniemi <>
JKAST Jason Kastner <>
JV Johan Vromans <>
JWAT John Watson <>
KGB Karl Glazebrook <>
KJALB Kenneth Albanowski <>
KSB Simon Berg <>
LDS Lincoln D. Stein <>
LSTAF Lennart Staflin <>
LWALL Larry Wall. Author of Perl. Busy man. <>
LWWWP libwww-perl mailing list <>
MARKB Mark Biggar <>
MARCP Marc Paquette <>
MEWP Michael Peppler <>
MERGL Edmund Mergl <>
MGH Marc Hedlund <>
MHM Mike Moran <>
MICB Malcolm Beattie <>
MRG Matthew Green <>
NI-S Nick Ing-Simmons <>
NWINT Neil Winton <>
PKUTS Peter Kutschera <>
PMQS Paul Marquess <>
P5P The Perl5 Porters Mailing List <>
PGUEN Philip Guenther <>
PVML Perl Vision Mailing List <>
RDO Robert Olson <>
RIK Rik Harris <>
RJRAY Randy J Ray <>
RVA Rodger Anderson <>
SEB Steven Brenner <>
SEMM Steve Emmerson <>
SGEL Sergio Gelato <>
SKUNZ Steven L. Kunz <>
SPIDB Spider Boardman <>
TKML Tk Mailing list <>
TOMC Tom Christiansen <>
TOMH Tom Horsley <>
TIMB Tim Bunce <>
TYEMQ Tye McQueen <>
UCLP Usenet: comp.lang.perl.misc, always a good place to enquire
ULPFR Ulrich Pfeifer <>
WPS William Setzer <>
WSCOT Wayne Scott <>

2) Perl Frequently Asked Questions (FAQ) Files

Perl Meta-FAQ on the World Wide Web (WWW)

Perl FAQ

3) Some Perl Archives # mirrors many other perl archives


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