An Introduction to Regular Expression with VBScript  
   Articles in two parts about using Regular Expressions with VCScript.
   http://www.4guysfromrolla.com/webtech/090199-1.shtml

Regular Expressions Library  
   A collection of regular expressions submitted by viewers.
   http://www.regxlib.com/

RegEx Tester  
   Online regular expression tester for preg (Perl) and ereg (POSIX) formats.
   http://www.quanetic.com/regex.php

RegExplorer  
   A visual regular expression explorer, it allows for writing regular expressions and visually see the matches. Uses the KDE/Qt Libraries for the user interface. [QPL]
   http://regexplorer.sourceforge.net/

Regular Expressions explained  
   An article by Jan Borsodi that gives an introduction to the world of regular expressions. It explains what regular expressions are and introduces the syntax. Also provides examples with varying complexity and a list of tools which use regular expressions.
   http://zez.org/article/articleview/11/

Visual RegExp  
   A graphical explorer for your regular expressions. Requires Tcl/Tk 8.x.
   http://laurent.riesterer.free.fr/regexp/

regexp.org  
   A forum for coders to share regexes and regex info.
   http://www.regexp.org/

TRegExpr  
   A Delphi port of Henry Spencer V8-routins for working with a subset of Perl Regular Expressions. Full source code in object pascal included. No DLL needed. [Freeware]
   http://anso.virtualave.net/

Regular Expressions Quickstart  
   An article about regular expressions in ASP pages.
   http://www.aspalliance.com/chrisg/default.asp?article=10

Regular Expressions  
   Describes Regular Expressions and compares them to Finite Automatas.
   http://www.cs.rochester.edu/u/leblanc/csc173/fa/re.html

Utilizing Regular Expressions  
   This article is a follow-up to an earlier 4Guys article "An Introduction to Regular Expression with VBScript". Regular Expression allows for complex pattern matching and replacing.
   http://www.4guysfromrolla.com/webtech/031500-1.shtml

TCL Regular Expressions  
   An Introduction to Regular Expressions in the scripting language TCL.
   http://www.lib.uchicago.edu/keith/tcl-course/topics/regexp.html

RegExpr for VB & VBA  
   Regular expression library for Visual Basic and Visual Basic for Applications.
   http://www.aivosto.com/regexpr.html

Regex Suite  
   Brings the power of regular expression searching and replacing to Frontier 5. [GPL]
   http://old.scriptmeridian.org/projects/regex/

Simplifed use of Regular Expressions from within your Scripts  
   A small library to make working with Regular Expressions a little bit easier. Free source code and tutorials for Windows developers.
   http://www.codeproject.com/asp/easyrx.asp

A 'Print This Page' Script Using the MS-XMLHTTP object and Regular Expressions  
   This article, by Troy Eberhard, examines how to create a Printer Friendly Page using Microsoft's XMLHTTP component along with regular expressions.
   http://www.4guysfromrolla.com/webtech/052701-1.shtml

DevShed - So What's A $#!%% Regular Expression, Anyway?!  
   Regular expressions are one of the most powerful tools in the arsenal of any *NIX programmer. This article offers insights into what they are, how to go about constructing them, and how to add them to your Perl, PHP and JavaScript programs.
   http://www.devshed.com/Server_Side/Administration/RegExp/page1.html

12 Reasons to Use Regular Expressions  
   An article that gives 12 reasons for learning and using Regular Expressions.
   http://www.websiterepairguy.com/articles/12_re.php

Extreg  
   A script that allows to perform search-and-replace operations with extended regular expressions from unix shells.
   http://www.ososo.de/extreg/

JRX  
   A simple JavaScript real-time regular expression evaluator, similar to RX tool of Activestate's Komodo IDE.
   http://www.cuneytyilmaz.com/prog/jrx/

Larger Regular Expressions  
   The purpose of this article is to show a few real-life examples of regular expressions at work.
   http://zez.org/article/articleview/65/

Regular Expression Usage in C#  
   The source code shows how to use Regular Expressions in C#.
   http://www.c-sharpcorner.com/3/RegExpPSD.asp

The Regex Coach  
   Graphical application for Linux and Windows which can be used to experiment with (Perl-compatible) regular expressions interactively.
   http://weitz.de/regex-coach/

Stripping HTML Tags using Regular Expressions  
   This article, by Scott Mitchell examines how to strip HTML tags from a string using regular expressions.
   http://www.4guysfromrolla.com/webtech/042501-1.shtml

Utilizing Regular Expression SubMatches  
   This article by Scott Mitchell examines some advanced features with regular expressions.
   http://www.4guysfromrolla.com/webtech/043001-1.shtml

Common Applications of Regular Expressions  
   This article by Richard Lowe demonstrates four powerful and practical applications of regular expressions.
   http://www.4guysfromrolla.com/webtech/120400-1.shtml

Matchmaking with regular expressions  
   Shows how to use the power of regular expressions to ease text parsing and processing.
   http://www.javaworld.com/javaworld/jw-07-2001/jw-0713-regex.html

VBScript Regular Expressions  
   Describes the improved text handling functions of version 5 of VBScript through its support for Regular Expressions.
   http://www.aspalliance.com/brettb/VBScriptRegularExpressions.asp

windows.oreilly.com -- C# Regular Expressions  
   Brad Merrill, coauthor of O'Reilly's C# Essentials, provides an overview of how regular expressions are used in the C# environment.
   http://windows.oreilly.com/news/csharp_0101.html

So What's A $#!%% Regular Expression, Anyway?!  
   Learn how to use regular expressions and perform search and replace operations.
   http://www.melonfire.com/community/columns/trog/article.php?id=2

Regular expressions in Haskell  
   Native Haskell implementation of polymorphic regular expressions. The regexps contains most of the features found in Perl.
   http://www.dcs.gla.ac.uk/~meurig/regexp/

Validating Form Input using Regular Expressions  
   Writing form validation code is often the most thankless part of your job. The logic can get quite complex, and often quite messy. This article will show how to use Regular Expressions to simplify your code.
   http://www.aspzone.com/Entries/ada24a81aecd457ba039d886180fbd64.aspx

Power REGex TESTER  
   An online tool for creating and testing regular expressions.
   http://koralsoft.dir.bg/venimus/index.htm

Regular Expression Builder  
   An open source tool written in C# to build and test regular expressions.
   http://renschler.net/regexbuilder/

Regular Expression Tester  
   Uses browser's JavaScript to show matches and subgroups, and highlights match in the input string.
   http://www.roblocher.com/technotes/regexp.aspx

RegexBuddy  
   Tool for creating, debug, implement and save regular expressions for Windows and Linux. [Commercial]
   http://www.regexbuddy.com

KRegExpEditor - Manual  
   A Manual describing the KDE Application for editing regular expressions.
   http://docs.kde.org/en/3.2/kdeutils/KRegExpEditor/

Geek Talk: The Regular Expression Rundown  
   What is a "regular expression"? Crispin Roven has the answer. Newbie-oriented. [Wired News]
   http://webmonkey.wired.com/webmonkey/geektalk/97/33/index3a.html