What is this?
React DevTools is a browser extension that lets you inspect the hierarchy of React components directly inside the Chrome and Firefox Developer Tools panels.
Is this a browser extension or a standalone app?
It is a browser extension that adds a dedicated 'React' panel to the Chrome and Firefox Developer Tools, not a separate application.
How do I get React DevTools now?
This repository is archived and has migrated into the main facebook/react monorepo; the current v3 extension source lives there in the v3 branch, which you build from source to get the extension.
Is this repo still maintained?
No, this repo is archived and no longer the active home of the project; development continues in the facebook/react repository.
Why was this repository archived?
The React DevTools codebase was moved into the main facebook/react monorepo, so this standalone repo stopped being the source of truth and was archived.
Where do I get the actively developed version?
Go to the facebook/react repository and look at the v3 branch, which contains the current source for the browser extension.
What does the extension actually show me?
It shows the React component tree inside your browser's dev tools, letting you inspect component props, state, and hierarchy for debugging.
What are similar projects?
redux-devtools-extension, web-source-inspect, redux-devtools, devtools-v6, ext-saladict, SwitchyOmega, git-history, SponsorBlock
Which topics is it in?
extension, firefox-extension, reactjs, devtools, debugging, chrome-extension, browser-extension, deprecated, browser, react, frontend, javascript