Life & fun · alternatives · 2026

Regularity is a macOS application for testing and developing JavaScript regular expressions. It provides an interface where users can write regex patterns and test them against sample text to verify they work as… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. JavaScript regex tester for macOS launched in 2017; newer entries below may have overtaken it.

1. 1
   A minimal, native MacOS desktop app for checking regex matches▲39

   2018 · github.com · its alternatives →

2. 2
   Regxr▲151

   A minimal, lightweight MacOS desktop app for RegEx

   2018 · github.com · its alternatives →

3. 3RF
   RegEx for Regular Folk – A visual, example-based introduction▲502

   2020 · refrf.shreyasminocha.me · its alternatives →

4. 4
   LLMs can generate valid JSON 100% of the time▲854

   Outlines is a Python library that focuses on text generation with large language models. Brandon and I are not LLM experts and started the project a few months ago because we wanted to understand better how the generation process works. Our original background is probabilistic, relational and symbolic programming. Recently we came up with a fast way to generate text that matches a regex (https://blog.normalcomputing.ai/posts/2023-07-27-regex-guide...). The basic idea is simple: regular expressions have an equivalent Deterministic-Finite Automaton (DFA) representation. We…

   2023 · github.com · its alternatives →

5. 5
   Regex library▲276

   A curated list of most commonly used regular expressions

   2022 · uibakery.io · its alternatives →

6. 6
   Expressions▲233

   An app to play with regular expressions. Easily and nicely.

   2016 · apptorium.com · its alternatives →

7. 7
   Regex Cheatsheet▲499

   A modern regular expression playground with live matching, visual railroad diagrams, rich notes, and easy sharing.

   2020 · ihateregex.io · its alternatives →

8. 8
   Regulex▲167

   Visualize Regular Expressions using Javascript

   2015 · jex.im · its alternatives →

9. 9
   RegexLearn▲328

   Learn RegEx step by step, from zero to advanced

   2021 · regexlearn.com · its alternatives →

10. 10
    Pretty Regular Expressions▲11

    A simple regular expressions app for iOS and macOS.

    2017 · apps.apple.com · its alternatives →

11. 11RE
    Regular expression compilation visualized▲219

    2021 · compiler.org · its alternatives →

12. 12
    Pretty Regular Expressions Beta▲12

    Beautiful RegEx, for iOS and macOS!

    2017 · chrishannah.me · its alternatives →

13. 13
    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 →

14. 14
    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 →

15. 15
    i Hate Regex▲477

    regex cheatsheet for the haters

    2020 · ihateregex.io · its alternatives →

16. 16
    Transductive regular expressions for text editing▲263

    An extension of regular expressions for text editing, with a grep-like command-line tool. If you, like me, struggle with group logic in regular expressions, you might find it useful. I wanted to do this for a very long time. It is more of a sketch or prototype. I'd really appreciate your feedback!

    2025 · github.com · its alternatives →

17. 17
    RegExr 2.0▲101

    Online tool to learn, build, & test Regular Expressions

    2014 · regexr.com · its alternatives →

18. 18
    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 →

19. 19
    Using functions to construct Regex in Python▲105

    Python to Regex. Regex to Python. The yRegex for humans. - iogf/crocs

    2017 · github.com · its alternatives →

20. 20RW
    Regexly – WYSIWYG Regex Playground for JavaScripters▲7

    2017 · regexly.chipto.io · its alternatives →

21. 21
    Regulark▲7

    Collection of regular expressions ( RegEx )

    2023 · its alternatives →

22. 22
    Readble Regex▲130

    Regex REST API for easier codebase maintenance of regex

    2025 · readable-regex-8d81b79167bf.herokuapp.com · its alternatives →

23. 23
    Matches.js -- Powerful Pattern Matching for Javascript▲96

    Powerful pattern matching for Javascript. Contribute to natefaubion/matches.js development by creating an account on GitHub.

    2012 · github.com · its alternatives →

24. 24IW
    I wrote a book on Python regular expressions▲193

    My book titled "Python re(gex)?" is free to download through this weekend [1][2] The book covers both 're' and 'regex' modules, has plenty of examples and chapters also have cheatsheets and exercises. Code snippets, exercises, sample chapters, etc are available on GitHub repo [3] I used pandoc+xelatex [4] to generate the pdf. [1] https://gumroad.com/l/py_regex [2] https://leanpub.com/py_regex [3] https://github.com/learnbyexample/py_regular_expressions [4]…

    2019 · its alternatives →

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 →