VibeusRegExr
Free browser tool to learn, build and test regular expressions, with live matches, JavaScript and PHP/PCRE support, token explanations, tests and a reference. Open source under GPL v3.
RegExr helps developers build and understand regular expressions with a live expression editor and sample text. Matches update as you type, and hovering over a token or result explains what it does. The official web app supports JavaScript and PHP/PCRE flavours, a reference, a cheatsheet and test cases.
Use the Replace, List, Details and Explain tools to inspect capture groups and experiment with output. The official service also offers saved and shared expressions and searchable community patterns. The supplied screenshot shows its real editor with the built-in example; it contains no private data.
Created by Grant Skinner and the gskinner team. The source is distributed under GNU GPL v3 with its original notices. A local development build uses Node, Gulp and npm dependencies; the archived .nvmrc names Node 10.21.0, and modern runtime compatibility and server configuration were not tested for this listing. The posting profile is a curator and does not claim to have developed RegExr.
