Regular Expressions

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

Data mining for reguar expressions.
A tool that allows programmers to generate a working program in a variety of languages that extracts data mined regular expressions from strings.
http://www.txt2re.com/

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

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

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/

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

PCRE Workbench
Graphical application for Windows which can be used to experiment with Perl-compatible regular expressions interactively.
http://www.renatomancuso.com/software/pcreworkbench/pcreworkbench.htm

PCRE Wrapper for Delphi 7
Provides Wrapper classes that provide PCRE for Delphi.
http://www.renatomancuso.com/software/dpcre/dpcre.htm

Power REGex TESTER
An online tool for creating and testing regular expressions.
http://www.regextester.com/

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

Programmer's Heaven Regex Area
Contains a beginners regex tutorial and guides for using regexes in various languages, including Perl, Java, .Net and Javascript. Also has a web-based regex testing tool and regex library.
http://www.programmersheaven.com/2/Regex

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

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/

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

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

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

RegexPal
JavaScript regular expression tester with real-time regex syntax and match highlighting.
http://regexpal.com/

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/

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

Regular Expression Analyzer
An online utility that helps analyzing regular expression structure.
http://regexp.resource.googlepages.com/analyzer.html

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

Regular Expression Usage in C#
The source code shows how to use Regular Expressions in C#.
http://www.c-sharpcorner.com/UploadFile/prasad_1/RegExpPSD12062005021717AM/RegExpPSD.aspx

Regular Expressions
Describes Regular Expressions and compares them to Finite Automatas.
http://www.cs.rochester.edu/u/nelson/courses/csc_173/fa/re.html

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/

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

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/KB/asp/easyrx.aspx

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

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

TCL Regular Expressions
An Introduction to Regular Expressions in the scripting language TCL.
http://www2.lib.uchicago.edu/~keith//tcl-course/topics/regexp.html

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://www.regexpstudio.com/TRegExpr/TRegExpr.html

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

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

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

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

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://www.windowsdevcenter.com/pub/a/oreilly/windows/news/csharp_0101.html

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. <small>(October 30, 2000)</small>
http://zez.org/article/articleview/11/