Life & fun · alternatives · 2026

24 alternatives to RegExr 2.0

Online tool to learn, build, & test Regular Expressions

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. RegExr 2.0 launched in 2014; newer entries below may have overtaken it.

1
RegexLearn▲328
Learn RegEx step by step, from zero to advanced
2021 · regexlearn.com · its alternatives →
2
Regex Cheatsheet▲499
A modern regular expression playground with live matching, visual railroad diagrams, rich notes, and easy sharing.
2020 · ihateregex.io · its alternatives →
3
RegViz▲84
Debugging regular expressions visually
2015 · regviz.org · its alternatives →
4
Regulex▲167
Visualize Regular Expressions using Javascript
2015 · jex.im · its alternatives →
5
Regex.ai – AI-powered regular expression generator▲294
Regex.ai is an AI-powered tool that generates regular expressions. It can accurately generate regular expressions that match specific patterns in text with precision. Whether you're a novice or an expert, Regex.ai's intuitive interface makes it easy to input sample text and generate complex regular expressions quickly and efficiently. Overall, Regex.ai is a game-changer that will save you time and streamline your workflow.
2023 · regex.ai · its alternatives →
6RF
RegEx for Regular Folk – A visual, example-based introduction▲502
2020 · refrf.shreyasminocha.me · its alternatives →
7
Regex library▲276
A curated list of most commonly used regular expressions
2022 · uibakery.io · its alternatives →
8
Regex Tester Pro▲6
Online regular expression testing tool
2025 · its alternatives →
9
RegEx Helper▲112
Free AI powered RegEx generator
2024 · regex.fav83.com · its alternatives →
10
Regex 101▲6
Online regex tester and debugger
2016 · regex101.com · its alternatives →
11RE
Regular expression compilation visualized▲219
2021 · compiler.org · its alternatives →
12
Regxr▲151
A minimal, lightweight MacOS desktop app for RegEx
2018 · github.com · its alternatives →
13
Improve your Python regex skills with 75 interactive exercises▲175
Learn Python Regular Expressions step by step from beginner to advanced levels - py_regular_expressions/interactive_exercises at master · learnbyexample/py_regular_expressions
2021 · github.com · its alternatives →
14
Regex.ai▲95
AI-powered regular expression generator
2023 · regex.ai · its alternatives →
15
RegexBot▲165
Easily convert natural language to RegEx using AI
2024 · its alternatives →
16
Online Regex Tester for PHP, PCRE, Python, Golang and JavaScript▲21
Online regex tester and debugger with real-time match highlighting, detailed explanations, substitutions, unit tests, benchmarking, and code generation. Supports PCRE2, JavaScript, Python, Go, Java, .NET, Rust, POSIX ERE, and POSIX BRE.
2018 · regex101.com · its alternatives →
17
RegexBuilder▲9
Build regular expressions visually
2025 · regexbuilder.vercel.app · its alternatives →
18
i Hate Regex▲477
regex cheatsheet for the haters
2020 · ihateregex.io · its alternatives →
19
A minimal, native MacOS desktop app for checking regex matches▲39
2018 · github.com · its alternatives →
20
Expressions▲233
An app to play with regular expressions. Easily and nicely.
2016 · apptorium.com · its alternatives →
21
Practice Makes Regexp▲61
50 exercises to help you master regular expressions
2016 · practicemakesregexp.com · its alternatives →
22
Ai Regex▲177
AI-driven regular expression generator
2024 · airegex.pro · its alternatives →
23
Regex Crossword▲65
Welcome to the fantastic world of nerdy regex fun!
2016 · regexcrossword.com · its alternatives →
24
Learn Regular Expressions with simple, interactive exercises▲144
RegexOne provides a set of interactive lessons and exercises to help you learn regular expressions
2020 · regexone.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →