2020-02

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

2020-01

Show HN: Regex Cheatsheet | Hacker News
Regex cheatsheet - I Hate Regex
6 Handy Regular Expressions Every Front-End Developer Should Know
micromatch/picomatch: Blazing fast and accurate glob matcher written JavaScript, with no dependencies and full support for standard and extended Bash glob features, including braces, extglobs, POSIX brackets, and regular expressions.
New ES2018 Regex Features Every JavaScript Developer Should Know | CSS-Tricks
Semantic Domain: Every Finite Automaton has a Corresponding Regular Expression
devongovett/regexgen: Generate regular expressions that match a set of strings

2019-12

Generating a regular expression to match valid JavaScript identifiers (like https://mathiasbynens.be/demo/javascript-identifier-regex) in Node.js

2019-10

RegexGuide: Online Tool for Future Regex Users.
Rosie Pattern Language: About Rosie Pattern Language (RPL)
Getting started with regular expressions: An example | Enable Sysadmin

2019-09

Is there a regular expression to detect a valid regular expression? - Stack Overflow
Special characters in regular expressions

2019-08

Wisdom/RegEx-DoS: RegEx Denial of Service (ReDos) Scanner
PostgreSQL: Regular expressions and pattern matching - 2ndQuadrant | PostgreSQL
Regex For Noobs (like me!) - an illustrated guide - Janmeppe.com

2019-07

ChrisPenner/lens-regex-pcre: Text lenses using PCRE regexes
Easy, actually.
Details of the Cloudflare outage on July 2, 2019
Why are regular expressions difficult?
terkelg/globrex: Glob to regular expression with support for extended globs.

2019-05

Regular expression pattern ICD-10 & ICD-10 diagnosis codes

2019-04

Microsoft/BlingFire: A lightning fast Finite State machine and REgular expression manipulation library.
Applicative Regular Expressions using the Free Alternative · in Code
jkutner/saferegex: A tool for testing regular expressions for ReDoS vulnerabilities.

2019-03

Chromium Blog: Irregexp, Google Chrome's New Regexp Implementation
Exploiting Regular Expressions – Somdev Sangwan – Medium

2019-02

Home Page - Hyperscan.io
intel/hyperscan: High-performance regular expression matching library
Hyperscan: A Fast Multi-pattern Regex Matcher for Modern CPUs (PDF)
Paper: Hyperscan: A Fast Multi-pattern Regex Matcher for Modern CPUs – Branch Free
Don’t fear the regex - All this
Daring Fireball: On Getting Started With Regular Expressions
JavaScript Regular Expressions for Regular People ← Alligator.io
Regular expressions (`RegExp`) • JavaScript for impatient programmers (beta)
New JavaScript Features That Will Change How You Write Regex — Smashing Magazine
Nevod - pattern-based text search

2019-01

4.7. Validate ISO 8601 Dates and Times - Regular Expressions Cookbook, 2nd Edition [Book]
^(-?(?:[1-9][0-9]*)?[0-9]{4})-(1[0-2]|0[1-9])-(3[01]|0[1-9]|[12][0-9])↵ T(2[0-3]|[01][0-9]):([0-5][0-9]):([0-5][0-9])(\.[0-9]+)?↵ (Z|[+-](?:2[0-3]|[01][0-9]):[0-5][0-9])?$
segmentio/glob: Glob matcher based on Go's path.Match()
BurntSushi/regex-automata: A low level regular expression library that uses deterministic finite automata.

2018-12

pampy/README.md at master · santinic/pampy
Gregable.com: Regular Expression Crossword Puzzle
Catastrophic Backtracking—Exponential Matches—ReDos

2018-11

rex
Derivatives of Regular Expressions (2007) | Hacker News
Derivatives of Regular Expressions | Lambda the Ultimate
TRE: A Regex Engine with Approximate Matching - Ducktape’s blog
Easy Dynamic Regular Expressions with Tagged Template Literals and Proxies | Lea Verou
Regex that only matches itself - Programming Puzzles & Code Golf Stack Exchange
Dr. Regex: How to match "A B C" where A+B=C: The Beast Reborn

2018-10

CppCon 2018: Hana Dusíková “Compile Time Regular Expressions” - programming
Rosie Pattern Language / Rosie · GitLab
govalidator/patterns.go at master · asaskevich/govalidator
mathiasbynens/emoji-regex: A regular expression to match all Emoji-only symbols as per the Unicode Standard.
No Magic: Regular Expressions, Part 3
No Magic: Regular Expressions
No Magic: Regular Expressions, Part 2

2018-09

HTML5Pattern is a source of common regexes for <input pattern="">
shinnn/github-username-regex: A regular expression that only matches a currently valid Github username
The Best of Fluent: /Reg(exp){2}lained/: Demystifying Regular Expressions - O'Reilly Media Free, Live Events
Chomsky hierarchy - Wikipedia
The Perl Journal One Liners - The Perl Journal, Spring 1999
"Regular expressions are to strings what math is to numbers." --Andrew Clinick, discussing what Microsoft thinks of Perl in http://www.microsoft.com/sitebuilder/magazine/clinick_perl.asp.
substack/safe-regex: detect possibly catastrophic, exponential-time regular expressions
Using Regex for Text Manipulation in Python

2018-08

build-your-own-x/README.md at master · danistefanovic/build-your-own-x
Regex Dictionary by Lou Hevly

2018-07

arnoldrobbins/mcilroy-regex: Doug McIlroy's C++ regular expression matching library
Beyond Regular Expressions: An Introduction to Parsing Context Free Grammars
Regular Expression Matching with a Trigram Index
Regular Expression Matching in the Wild
Regular Expression Matching: the Virtual Machine Approach
The GNU Awk User’s Guide: Ranges and Locales
micromatch/micromatch: Highly optimized wildcard and glob matching library. Faster, drop-in replacement to minimatch and multimatch. Used by babel core, yarn, jest, browser-sync, documentation.js, stylelint, nyc, and many others!

2018-06

rust-lang/regex: An implementation of regular expressions for Rust. This implementation uses finite automata and guarantees linear time matching on all inputs.
Regex Cheatsheet
Regular expressions: how do they work?
kevva/url-regex: Regular expression for matching URLs
Using Regular Expressions to Find Cthulhu 🐙

2018-05

UTS #18: Unicode Regular Expressions
No Magic: Regular Expressions, Part 3
No Magic: Regular Expressions, Part 2
No Magic: Regular Expressions
How Regexes Work
Build a Regex Engine in Less than 40 Lines of Code › Nick Drane
Regular Expression Matching Can Be Simple And Fast
DasSur.ma – My most useful RegExp trick

2018-04

dhellmann/presentation-regexes-fear: Presentation: Regular Expressions Are Nothing to Fear
So you think you can validate email addresses A journey down RFC5321 - YouTube
Parsing: a timeline -- V3.0
Exploring the Linguistics Behind Regular Expressions
https://www.cs.princeton.edu/courses/archive/spr09/cos333/beautiful.html
Python Regular Expressions Cheat Sheet

2018-03

lookaheads (and lookbehinds) in JavaScript regular expressions
Regexp Syntax Summary
Lookahead and Lookbehind Tutorial—Tips &Tricks
Exploring the Linguistics Behind Regular Expressions

2018-02

Regular Expression Matching Can Be Simple And Fast
ECMAScript regular expressions are getting better! · Mathias Bynens
ES2018: RegExp named capture groups
ES2018: RegExp Unicode property escapes
ES2018: RegExp lookbehind assertions
ES2018: `s` (`dotAll`) flag for regular expressions

2018-01

Regexper
free-programming-books/free-programming-books.md at master · EbookFoundation/free-programming-books
hosseinmousavi/Regex.Persian.Language: Collection of Regex for validating, filtering, sanitizing and finding Persian strings
Ftfy – fix Unicode that's broken in various ways | Hacker News
[^ -~]
chalk/ansi-regex: Regular expression for matching ANSI escape codes

2017-12

Python – Regular Expressions Practical Guide – Developers Area
Python – Regular Expressions Practical Guide – Developers Area
Comparison of regular expression engines - Wikipedia
An introduction to regular expressions - O'Reilly Media
Dr. Regex: Match Nested Brackets with Regex: A new approach
GitHub - mndrix/regex: Regular expressions for Prolog
Regex was taking 5 days to run. So I built a tool that did it in 15 minutes.
Build a Regex Engine in Less than 40 Lines of Code › Nick Drane
Regular Expressions for Data Scientists

2017-11

Introduction to Regular Expressions in Python
Structural Regular Expressions

2017-10

AWS WAF Now Supports Regular Expressions (Regex)
code golf - Regex that only matches itself - Programming Puzzles & Code Golf Stack Exchange
dinant-0.5
sindresorhus/matcher: Simple wildcard matching
sindresorhus/globby: User-friendly glob matching
eriknyquist/librxvm: non-backtracking NFA-based regular expression library, for C and Python

2017-09

opennota/re2dfa: Transform regular expressions into finite state machines and output Go source code
dveselov/python-pire: Python interface to PIRE
RegexHQ

2017-08

Regular Expressions and Grouping Sets
V8 JavaScript Engine: Upcoming RegExp Features
Language Tags: Addison Phillips Java regexp for language tags

2017-07

GitHub - zeeshanu/learn-regex: Learn regex the easy way
Regular Expressions Primer and Resource - Advanced Text Searching
GitHub - iogf/crocs: Write regex using pure python class/function syntax and test it better. (Regex for humans).
MIT Mystery Hunt Puzzle Index: Puzzle Data
BBC Radio 4 - Today - Puzzle for Today
Replacing a Complex Regular Expression with a Simple Parser
FuzzyFinder - in 10 lines of Python - Brain Spill

2017-06

re — Regular Expressions — PyMOTW 3
OWASP Validation Regex Repository - OWASP
Regex Set Scanning with Hyperscan and RE2::Set | 01.org
Java 101: Regular expressions in Java, Part 1 | JavaWorld
Reparse — Reparse 3.0 documentation
I Knew How To Validate An Email Address Until I Read The RFC | You’ve Been Haacked
wregex - How Regular Expression Engines Work

2017-05

Update: re_search.py Version 0.0.7 | Didier Stevens
The New ‘Absent Operator’ in Ruby’s Regular Expressions – Ruby Inside – Medium
Converting glob patterns to efficient regexes in Perl and JavaScript | mauke [blogs.perl.org]

2017-04

Java Standard Library — Scala Native 0.1 documentation
research!rsc: Glob Matching Can Be Simple And Fast Too
Beyond Regular Expressions - Lex and Yacc
Fuzzing is magic - Or how I found a panic in Rust's regex library
A comparison of regex engines – Rust Leipzig

2017-02

#12818 (regex: badly needs fuzzing) – Boost C++ Libraries

2017-01

V8 JavaScript Engine: Speeding up V8 Regular Expressions
Let’s Stop Ascribing Meaning to Code Points | Hacker News
GitHub - laurikari/tre: The approximate regex matching library and agrep command line tool.

2016-12

RegEx Face Off
lk-geimfari/expynent: A library that provides regex patterns. If you hate to write regular expressions, then expynent can help you.
RunKit + npm: regexgen
Yesterdays Regex — Geek&Poke
Regular Expressions for Google Analytics - Regular-Expressions-Google-Analytics.pdf
Runaway Regular Expressions: Catastrophic Backtracking
ripgrep code review
Adventures in the land of substrings and RegExps.

2016-11

Regex Hub - Useful Regex Patterns
RegexOne - Learn Regular Expressions - Lesson 1: An Introduction, and the ABCs
Visualizing Regular Expressions: regexper.com – Medium
Regex 101 | Hacker News
Big Performance Improvement for std.regex – The D Blog
Regex that only matches itself - Programming Puzzles & Code Golf Stack Exchange

2016-10

Unicode property escapes in JavaScript regular expressions · Mathias Bynens
jamiejennings/rosie-pattern-language: Rosie Pattern Language (RPL) and the Rosie Pattern Engine
Recursive Regular Expression

2016-09

rust-lang-nursery/regex: An implementation of regular expressions for Rust. This implementation uses finite automata and guarantees linear time matching on all inputs.
ripgrep is faster than {grep, ag, git grep, ucg, pt, sift} - Andrew Gallant's Blog
Demystifying The Regular Expression That Checks If A Number Is Prime – G'd Up Code
The 100% correct way to validate email addresses

2016-08

SRL - Simple Regex Language
Google Code Archive - Long-term storage for Google Code Project Hosting.
why GNU grep is fast
s4ke/moar: Deterministic Regular Expressions with Backreferences
Maniagnosis - A deep dive into regular expression derivatives for lexical analysis
Ann: Typed regular expressions | Drup's thingies
Regular expression to match line that doesn't contain a word? - Stack Overflow
Validating Email Addresses with a Regex? Do yourself a favor and don’t – /dev/random
Apocalypse 5: Pattern Matching
kkos/oniguruma: regular expression library
Boost.Regex 5.1.1 - 1.61.0
A Regular Expression Matcher (2007) | Hacker News

2016-07

moovweb/rubex: Super Fast Regex in Go
Stack Overflow Outage Postmortem | Hacker News
Stack Exchange Network Status — Outage Postmortem - July 20, 2016

2016-06

Fast, Elegant Regexes in Haskell
Making sense of regular expressions

2016-05

path-to-regexp
Eigenstate :: Implementing A Simple Regex Debugger
languagengine - Blog - Regex Edit Distance
Regular expressions you can read: A new visual syntax (and UI) — Medium
BurntSushi/rure-go: Go bindings to Rust's regex engine.

2016-04

Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.
regex - How to make perl regexes matches ASCII and Unicode - Stack Overflow
EReg - Haxe API
Practice Makes Regexp - New regexp book from Reuven Lerner
Elliot Chance - It's Impossible to Validate an Email Address
Best Practices for Regular Expressions - Codacy | Blog

2016-03

mathiasbynens/regex-trie-cli - Create regular expression patterns based on a list of strings to be matched
Puzzle | LinkedIn Engineering
Hard code golf: Regex for divisibility by 7 - Programming Puzzles & Code Golf Stack Exchange
V8 JavaScript Engine: RegExp lookbehind assertions

2016-02

Understanding the basics of Regular Expression
[no title]
kirbyfan64/rejit: A work-in-progress JIT-powered regex engine
CaptainCrowbar/unicorn-lib: Unicode library for C++
String Parsing in SQL
GitHub - akoumjian/datefinder: Find dates inside text using Python and get back datetime objects

2016-01

How I fixed Atom - davidvgalbraith
alexflint/go-restructure: Match regular expressions into struct fields
GuillaumeBadi/Verbal-Exprejon
regex cheat sheet at DuckDuckGo
Javarevisited: 10 examples of grep command in UNIX and Linux
d10/regjsgen · GitHub
jviereck/regjsparser · GitHub
mathiasbynens/regenerate · GitHub
mathiasbynens/regexpu-core · GitHub
VerbalExpressions/JSVerbalExpressions

2015-12

Regex Crossword
Gregable: Regular Expression Crossword Puzzle
Email address validation and encodings
Shell scripting notes – searching matching filenames and matching content | Kev's Development Toolbox
Regular Expression Basics | BoTree Technologies
RegExp class - dart:core library - Dart API

2015-11

Python's Hidden Regular Expression Gems | Armin Ronacher's Thoughts and Writings
Abandon - Validate Facebook URLs & Twitter Usernames with PHP Regular Expression

2015-10

Siderite's Blog: Super Fast and Accurate string distance algorithm: Sift4
the-emacs-problem - steveyegge2
How We Match Regular Expressions | 01.org
LightboxTech/liblightgrep · GitHub
Hyperscan | 01.org
Exact String Matching Algorithms | HackerEarth
Introduction to regular expressions
Working with Email Addresses in SQL - Mode Blog

2015-09

The Best Regex Trick
Fast String Matching | JW Player
Perl Regular Expression Matching is NP-Hard
Converting regular expressions into nondeterministic finite automata (NFAs): An implementation in Java
Pattern-matching regular expressions in Scheme using derivatives
yandex/pire · GitHub
Perl Incompatible Regular Expressions library
A regular expression converter - hokein/Automata.js · GitHub

2015-08

fent/randexp.js @ GitHub
Create random strings that match a given regular expression.
Snobol Pattern Matching in Python
Character Model for the World Wide Web: String Matching and Searching
PCRE - Perl Compatible Regular Expressions
Syntax extensions and regular expressions for Rust - Andrew Gallant's Blog
regex - Regular expression for unicode in java 7 - Stack Overflow

2015-07

New regular expression features in ECMAScript 6
Using wildcard matching in any programming language | RLV Blog
Dennis Yurichev: 23-Jul-2015: Fuzzy string matching + simplest possible spellchecking + hunting for typos and misspellings in Wikipedia.
download.geonames.org/export/dump/countryInfo.txt
Automatic Generation of Text Extraction Patterns from Examples
swift - NSRegularExpression regex replace Greek Unicode text - Stack Overflow
This Week in D: June 28, 2015
Ragel State Machine Compiler | Colm Networks
Five Invaluable Techniques to Improve Regex Performance : programming
Five Invaluable Techniques to Improve Regex Performance

2015-06

RohitK89/LogScraper · GitHub
Xeger - More expressive regular expressions for JavaScript. Pronounced "zeeger"
Regexes: The Bad, the Better, and the Best : programming
Regexes: the Bad, the Better, and the Best
Alternatives To Regular Expressions
jonathantneal/regexp-escape · GitHub
Implementing Regular Expressions

2015-05

Emojineering Part 2: Implementing Hashtag Emoji - Instagram Engineering
PatternMatcher | Android Developers

2015-04

Python regex tokenization of Unicode string not working as expected - Stack Overflow
Unicode and Boost.Regex - 1.58.0
In search of the perfect URL validation regex
Is there a regular expression to detect a valid regular expression? - Stack Overflow

2015-03

google/re2j · GitHub
neuront/python-reloon · GitHub
is.js - micro check library
Wrestling PCRE
Understanding Regular Expressions 2: Groups and Captures

2015-02

Email Regex that works 99.99% | Hacker News
Email Regex - Everything About Email Regular Expression!
RegExp.prototype.unicode - JavaScript | MDN
Regular Expressions in T-SQL - SQLTeam.com
Regular Expressions in T-SQL - Ken Henderson's WebLog - Site Home - MSDN Blogs
SQL Server: Regular Expressions for Efficient SQL Querying

2015-01

mathiasbynens/regexpu · GitHub
A source code transpiler that enables the use of ES6 Unicode regular expressions in ES5.
Unicode Regular Expression Engines // Speaker Deck
A JIT for grepping: jrep and rejit [LWN.net]
“grep was a private command of mine for quite a while before i made it public.” -Ken Thompson — Medium
Liniarc/regexProgram · GitHub

2014-12

Automatic Generation of Text Extraction Patterns from Examples
'regex' tag wiki - Stack Overflow
Regular expression cheat sheet
cheatsheet - regex-cheatsheet.pdf
Regular Expression Cheat Sheet
[.NET Core] System.Text.RegularExpressions Source Code : programming

2014-10

regex - Unicode expression failing in preg_match after php and apache update - Stack Overflow

2014-09

Maybe regexp is the wrong tool for this job. I'm just saying. : programming
Full email validation regex (RFC 2822) | Hacker News
Mathias Bynens on Twitter: "Support for the ES6 `y` flag for sticky regular expressions just landed in V8: https://t.co/XVx6JMlLwT Coming soon to Chrome, Opera & Node!"
sunlightlabs/jellyfish · GitHub
a python library for doing approximate and phonetic matching of strings.

2014-08

Unicode-aware regular expressions in ES6 · Mathias Bynens
Lrexlib
What you should know about JavaScript regular expressions

2014-07

sindresorhus/mapcode-regex · GitHub
Regular expression for matching mapcodes
charles leifer | Playing with Python Magic Methods to make a nicer Regex API
regex /(?x: (w+) s (w+) )/ hacker news at DuckDuckGo
Understanding and Using Regular Expressions

2014-06

In search of the perfect URL validation regex
TCL Regular Expression Examples
hrothgar/lexitron · GitHub
regex on a english dictionary
TRE — The free and portable approximate regex matching library.
Comparison of regular expression engines - Wikipedia, the free encyclopedia
List of regular expression software - Wikipedia, the free encyclopedia
regex 2014.05.23 : Python Package Index

2014-04

Andrew Gallant's Blog :: Syntax extensions and regular expressions for Rust
Regular Expressions without Fear - The Changelog
VerbalExpressions ♥ Open Source

2014-03

How to correctly detect credit card type
gskinner.com: gBlog: RegExr v2: Build, Test, & Learn RegEx
Regex Tutorial—From Regex 101 to Advanced Regex
Rx - a backend for writing regex debuggers for Perl
Duktape
Learn regular expressions in about 55 minutes - Sam Hughes
Mastering Python Regular Expressions by Félix López and Víctor Romero

2014-02

Try Regex—an interactive regex tutorial
The regex that broke a server | Vlad Mihalcea's Blog
xkcd 1313: Regex Golf (Part 2: Infinite Problems)
The Regexinator: a Google Analytics Regex Filter Compiler - LunaMetrics
Solving a Regular Expression Crossword with Haskell, Part 1
Regular Expressions in ANS Forth

2014-01

The Developer’s RegEx Survival Guide: 15 Rules for Making Sense of Regular Expressions
Windows with C++ - Using Regular Expressions with Modern C++
command center: Regular expressions in lexing and parsing
HTML5 Input Patterns and Invalid Regex
Regex Golf, xkcd, and Peter Norvig - Slashdot
xkcd: Regex Golf
Solution to xkcd 1313
thebinarysearchtree/regexpbuilderjs · GitHub
igrigorik/textquery · GitHub

2013-12

Regex Golf - discussion on Hacker News
Regex Golf - discussion on Reddit
Regex Golf
Hexpress by krainboltgreene
andrewberls/regularity · GitHub
CommonRegex - A collection of common regular expressions bundled with an easy to use interface.

2013-11

Rex @ rise4fun from Microsoft
../re/testregex.mm mm document
man/man1/testregex.html man page
The best online regular expression / RegEx testers and builder-tools as of 2013 | Technical Programming and Design
SLRE: Super Light Regular Expression library

2013-10

Of running multiple regexp at once
JSON parser as a single Perl Regex
Parsing JSON with a single regex | brian d foy [blogs.perl.org]
Matt Swanson - How not to validate email addresses

2013-09

Meet RegExpBuilder: Verbal Expressions' rich, older cousin - The Changelog
Official IETF regex for URLs
RFC 3986 - Uniform Resource Identifier (URI): Generic Syntax
thebinarysearchtree/RegExpBuilder - GitHub

2013-08

A Recursive Regular Expression for Matching Regular Expressions - Abrazolica
Bitsets match regular expressions, compactly - Paul Khuong mostly on Lisp
12 Resources For Mastering Regular Expressions
Using Python's AST parser to create regular expressions from English
noprompt/frak · GitHub
Transform collections of strings into regular expressions
Build Regex - A Simple RegEx GUI

2013-07

jehna/VerbalExpressions · GitHub
Just released a major update for my site. What do you guys think? | Hacker News
Love Rubular? Here are a few open source copycats to checkout. - The Changelog
Regex Crossword
046 Regex on Vimeo
Parsley: A Pattern-Matching Language Based on OMeta and Python - github

2013-06

Finite State Machines and Regular Expressions - General Programming - Articles - Articles - GameDev.net
GROK regex test page
Standard GROK regex patterns

2013-05

Learn Regular Expressions - Pony Foo
The true power of regular expressions
Counting with Regular Expressions - Abrazolica
Stop Validating Email Addresses With Your Complex Regex - davidcel.is
JavaScript Regular Expression Enlightenment - Tech.Pro
Stop Avoiding Regular Expressions Damn It - bradt.ca
www.cs.princeton.edu/courses/archive/spr09/cos333/beautiful.html

2013-04

Brain Dump (english): Arithmetic with Regexps
Why the hell am I building a product with a tiny market? - Debuggex
Best of Fluent 2012: /Reg(exp){2}lained/: Demystifying Regular Expressions - YouTube
An example driven guide to regular expressions | JoeJag :: Tech
Python, Catastrophic Regular Expressions and the GIL

2013-03

Nested Regular Expressions explained | Linguistic forms
Details of Regular Expression Behavior
Bastards Book of Regular Expressions by Dan Nguyen [PDF/iPad/Kindle]
HTML5 Pattern
regexs for HTML5 input validation
REBEL - Kendall Frey's Website
Regular Expression Based Esoteric Language - a declarative programming language that works by iteratively replacing substrings
petere/pgpcre · GitHub

2013-02

java - Cancelling a long running regex match? - Stack Overflow
Comparison of regular expression engines - Wikipedia, the free encyclopedia
Parsing Techniques - A Practical Guide | Hacker News
print "Me" -- portable perspectives
k-takata/Onigmo · GitHub
Ruby 2.0

Number of links: 400

Also see links to other regex testing websites/programs on the Similiar Tools page.