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  1. 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.

  2. regex101: Community Pattern Library

    Search, filter and view user submitted regular expressions in the regex library. Over 20,000 entries, and counting!

  3. regex101: Grep from A to B

    Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.

  4. regex101: posix

    Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.

  5. regex101: Regex Cheatsheet

    Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.

  6. regex101: DOTNET

    Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.

  7. regex101: Java Regex

    Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.

  8. regex101: Bash (sed)

    Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.

  9. regex101: Regex Quiz

    This is an interactive learning tool you can use to improve your understanding of regular expressions, and their different applications. The quiz is divided into a number of different …

  10. Santa's secret helper - regex101.com

    Search, filter and view user submitted regular expressions in the regex library. Over 20,000 entries, and counting!