Overview
Regex101 is an online tool designed for regular expression (regex) testing, debugging, and education. It supports multiple regex flavors including PCRE, PCRE2, ECMAScript (JavaScript), Python, Golang, Java, .NET 7.0 (C#), and Rust. The tool provides real-time feedback as you type your regex pattern and test string, with an automatically generated explanation of the regex. Users can save and share regex patterns, access a quick reference guide, and utilize tools such as a code generator and regex debugger. Regex101 aids developers in validating complex regex, understanding the behavior of their patterns, and generating code snippets for various programming languages, facilitating efficient regex implementation and maintenance across different projects. It is widely used by developers, system administrators, and security professionals.