awesome-regex

MSDN documentation about Regex

MDN chapter about JavaScript regular expressions

Boost documentation

Regexes in Perl 6

Concatenated PCRE man pages

New Regexes in ECMAScript 6

in C++

Java 7 docs

Scala Regex

Regular Expressions Python module tutorial

Introduction and Reference Links

Online visual Regex tester

Online visual Regex tester

Online node-based Regex editor

Website for interactive Regex prototyping with syntax highlighting (by @gskinner)

Online Regex tester, debugger with highlighting

Ruby-based regular expression editor and tester

AJAX Regular EXpression eValuator

Tool for debugging JavaScript regular expressions in a visual way

JavaScript Regular Expression Visualizer

Online Regex tester to check validity of Regex in the Python language Regex subset

Quick way to test your Python regular expressions

Regex visualizer for JavaScript using railroad diagrams

Live JavaScript Regular Expression Tester

.NET online Regex tester

.NET Regex tester with highlighting and detailed results output

JavaScript library and online tool to generate strings that a regular expression would match

JavaScript + PCRE online tester

Regular Expression Tester with highlighting for Javascript and PCRE

Free online Regex tester

A secure regular expression tester. built using Go

PHP specific regular expression tester with live evaluation and code generation for all PHP's regex functions

Generate Regular expressions based on a string

Automatic Generation of Text Extraction Patterns from Examples

regexgen

Generates regular expressions that match a set of strings

RegexGenerator

A tool for generating regular expressions for text extraction (by @MaLeLabTs)

Regex Numeric Range Generator, when you need to match an integer range

Command line tool to generate Regex

JavaScript library and online tool to generate a regular expression that matches strings

Plain Text to Regex Generator

grex

A command-line tool and library for generating regular expressions from user-provided test cases

English <-> Regex from an AI

SafeRegex

A command-line tool for testing regular expressions for vulnerabilities

Entry on regular expressions

In-progress book that quickly teaches you regular expressions

Basic concept of how Regex parsing works

[PDF] - What are Regular Expressions

Informative website for learning regular expressions

A regular expressions tutorial that goes deep into advanced features

Try Regex is an interactive regular expressions tutorial

A Basic Introduction To Using Regular Expressions In Programming

How to use of regular expression

Regex golf with Peter Norvig

A good introduction to Python Regular Expressions from Google

Fluent 2012 talk reviewing and visualizing basic and intermediate Regular Expressions

PDF Series

Regular expressions section in The Modern JavaScript Tutorial

Learn Regex step by step, from zero to advanced

Free and portable approximate Regex matching library

Go-Restructure

Match regular expressions into struct fields in Go (by @alexflint)

js-regex

Chainable API for constructing Regexes

VerbalExpressions is a cross-language library that helps to construct difficult regular expressions

Super Expressive

Super Expressive is a JavaScript library that allows you to build regular expressions in natural language

JavaScript Regex library

RE2

RE2 is a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. It is a C++ library

Hyperscan

High-performance multiple Regex matching library

Regular Expression Library (5000+ indexed expressions)

Useful Regex Patterns

Regular Expression Patterns (+testing)

A web app to decode Regex into plain English. You can edit it and translate back

Explain Regular Expressions

Regex challenges with varying levels of difficulty

Little Regex Sudoku/Crossword thing (by @padolsey)

Regex Tuesday - Challenges

Challenge list about Regex

A crossword puzzle game using regular expressions

Learn regular expressions with simple, interactive examples

Regexp exercises

A crossword puzzle with a neat web interface

Craft your own powerful, yet efficient regex

How a few characters can make a difference in performance

So you're doubtful at the mention of a "best Regex trick"?

If you don’t write them carefully, you can end up with an unmaintainable monstrosity

How a regular expression can check if a number is prime

Regular Expressions in 30 Minutes

Regular Expressions in Java

Stack Overflow

Regex jokes and cartoons

A short history of regexes

Al Aho and Jeff Ullman (1992) ( )

Andrew Watt (2005)

Jeffrey E.F. Friedl (2006)

Tony Stubblebine (2007)

Michael Fitzgerald (2012)

Jan Goyvaerts & Steven Levithan (2012)

Felix Lopez & Victor Romero (2014)

Loiane Groner & Gabriel Manricks (2015)

Python re(gex)?

Sundeep Agarwal (2020)

Languages Regex Benchmark

It's just a simple Regex benchmark of different programming languages

Regex Performance

Performance comparison of regular expression engines