Regex library
A curated list of most commonly used regular expressions
Regex library launched on February 8, 2022 with 276 votes, #76 of 2,645 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 4 years on.
In plain words
Regex library is a curated collection of commonly used regular expressions with code examples in JavaScript, Python, Java, C#, and PHP. It serves developers who need quick reference patterns for regular expression tasks. The resource stands out by providing working examples across multiple programming languages, making it useful for teams working in different tech stacks.
written from the facts on this page · September 2026
From the sources
A curated list of most commonly used regular expressions with code examples in different programming languages: JavaScript, Python, Java, C#, and PHP.
Regular expressions (RegEx) are powerful tools used in programming for pattern matching and data manipulation. Here's an outline of what such a library could include:
RegEx Library - a curated list of useful regular expressions for different programmingfrom uibakery.io
Does a similar job
all alternatives →- RFRegEx for Regular Folk – A visual, example-based introduction2020 · refrf.shreyasminocha.me · ▲502
Regex Cheatsheet2020 · ihateregex.io · ▲499A modern regular expression playground with live matching, visual railroad diagrams, rich notes, and easy sharing.
- IWI wrote a book on Python regular expressions2019 · ▲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]…
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