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Regex101
regex101.com
regex101: build, test, and debug regex
Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.
Regex Quiz
Learn regex and challenge yourself in a unique regex quiz: play progressively harder levels and compete with others in creating the shortest solutions.
Community Patterns
From a (fairly large) list of User ... Type.Submitted by OnlineCop ... Get path (windows style) from any type of text (error message, e-mail corps ...), quoted or not. THIS IS THE SINGLE LINE VERSION ! If you want understand how it work or edit it, go https://regex101.com/r/7o2fyy Relative ...
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RegExr
regexr.com
RegExr: Learn, Build, & Test RegEx
RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp).
Discussions

RegEx wizards, how did you learn RegEx and how did you get it to stick?
https://regex101.com is what I use. More on reddit.com
🌐 r/learnprogramming
120
932
July 16, 2019
Best site to learn regex?
Regex101.com is a great place to do testing. It will help show you what your commands are going to pull. There is also a good help window. More on reddit.com
🌐 r/learnpython
20
9
June 30, 2022
A brilliant website that allows you to experiment with regular expressions.
I have no idea what this is, even after the explanation, but it sounds important for future me, so past me is saving it. More on reddit.com
🌐 r/InternetIsBeautiful
260
5215
July 19, 2017
Where to find regex practice problems
https://regexcrossword.com/ https://regexone.com/ More on reddit.com
🌐 r/learnprogramming
2
1
February 13, 2022
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Rubular
rubular.com
Rubular: a Ruby regular expression editor
Ruby-based regular expression editor/tester
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Regexstorm
regexstorm.net β€Ί tester
.NET Regex Tester - Regex Storm
Online .NET regular expression tester with real-time highlighting and detailed results output.
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AnalyticsMarket
analyticsmarket.com β€Ί freetools β€Ί regex-tester
Google Analytics Regular Expression Tester - AnalyticsMarket
August 1, 2023 - This tool lets you test regular expressions (RegEx). Once the RegEx works as expected, use it in a Google Analytics Filter.
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Debuggex
debuggex.com
Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.
Test your regex by visualizing it with a live editor. JavaScript, Python, and PCRE.
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OpenReplay
openreplay.com β€Ί tools β€Ί regex-tester
Regex Tester
Test regular expressions with various flags and get detailed match results. A must-have tool for developers working with regex patterns.
Find elsewhere
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Playcode
playcode.io β€Ί regex-tester
Regex Tester Online - Free Regex Validator & Generator
Free online regex tester to test and validate regular expressions with real-time matching. Build, debug, and generate regex patterns instantly. JavaScript regex syntax supported.
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RegexOne
regexone.com
RegexOne - Learn Regular Expressions - Lesson 1: An Introduction, and the ABCs
RegexOne Learn Regular Expressions with simple, interactive exercises.
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Regex Generator
regex-generator.olafneumann.org
Regex Generator - Creating regex is easy again!
A tool to generate simple regular expressions from sample text. Enable less experienced developers to create regex smoothly.
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FOSSA
fossa.com β€Ί resources β€Ί devops-tools β€Ί regex-tester
Regex Tester | Free DevOps Tool | FOSSA
Free online regex tester and debugger with syntax highlighting, real-time matching, and detailed match information. Test and validate regular expressions instantly.
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Text
platform.text.com β€Ί tools β€Ί regex-builder
Text Platform | Regex Builder
Create and test your regular expressions in our free online regex builder.
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Regex Learn
regexlearn.com β€Ί playground
Regex Learn - Playground
You can easily build and test your regex pattern online via Playground.
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Regex Tester
regextester.com
Regex Tester and Debugger Online - Javascript, PCRE, PHP
Regex Tester is a tool to learn, build, & test Regular Expressions (RegEx / RegExp).
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Trackingplan
trackingplan.com β€Ί regex-tester
Regex Tester Online: Test & Validate Regular Expressions | Trackingplan
Welcome to the ultimate online Regex Tester, your go-to tool for testing and validating regular expressions with ease.
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Regex Learn
regexlearn.com
Regex Learn - Step by step, from zero to advanced.
You can easily manage your data with Regex, which uses commands like finding, matching, and editing. Regex can be used in programming languages such as Python, SQL, JavaScript, R, Google Analytics, Google Data Studio, and throughout the coding process. Learn regex online with examples and tutorials ...
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Phpliveregex
phpliveregex.com
PHP Live Regex
Test PHP regular expressions live in your browser and generate sample code for preg_match, preg_match_all, preg_replace, preg_grep, and preg_split!
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ExtendsClass
extendsclass.com β€Ί regex-tester.html
Online Regex tester and visualizer - Python, PHP, Ruby ...
Regex humor (Jamie Zawinski): Some people, when confronted with a problem, think "I know, I'll use regular expressions." Now they have two problems. Cyrilex is an online regex checker, it allows to easily test and debug regex.
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Regex Pal
regexpal.com
Regex Tester - Javascript, PCRE, PHP
Test your Javascript and PCRE regular expressions online.