JavaScript Regular expressions made easy

RegExr is a HTML/JS based tool for creating, testing, and learning about Regular Expressions.

Theano was a Python library that allows you to define, optimize, and evaluate mathematical expressions involving multi-dimensional arrays efficiently. It is being continued as PyTensor: www.github.com/pymc-devs/pytensor

RE2 is a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. It is a C++ library.

Turn a path string such as `/user/:name` into a regular expression

A command-line tool and Rust library with Python bindings for generating regular expressions from user-provided test cases

Expression language and expression evaluation for Go

A library to generate LaTeX expression from Python code.

Converts CSS selectors to XPath expressions

:construction: Regular Expression Excited!

High-performance regular expression matching library

Safely serialize JavaScript expressions to a superset of JSON, which includes Dates, BigInts, and more.

CRON for PHP: Calculate the next or previous run date and determine if a CRON expression is due

Regular expressions that match the mobile phone number in mainland China. / 一组匹配中国大陆手机号码的正则表达式。

Melody is a language that compiles to regular expressions and aims to be more readable and maintainable

🦜 Super Expressive is a zero-dependency JavaScript library for building regular expressions in (almost) natural language

A vi-like editor based on Plan 9's structural regular expressions

A fast and reliable .NET Rules Engine with extensive Dynamic expression support

An implementation of regular expressions for Rust. This implementation uses finite automata and guarantees linear time matching on all inputs.

Arbitrary expression evaluation for golang

Compile Time Regular Expression in C++

Common Expression Language -- specification and binary representation

Backport of Java 8's lambda expressions to Java 7, 6 and 5

Generate regular expressions that match a set of strings

Extended JavaScript regular expressions

Serialize JavaScript to a superset of JSON that includes regular expressions and functions.

Fast, portable, non-Turing complete expression evaluation with gradual typing (Go)

Provides an engine that can compile and evaluate expressions

Java regular expressions made easy.

Trigger functions or evaluate cron expressions in JavaScript or TypeScript. No dependencies. Most features. Node. Deno. Bun. Browser.