React Developer Tools.

React is the most used front-end framework.
These is about 5 react developer tools, which must be used by a react developer.
React Developer Tools - chrome.google.com/webstore/detail/react-developer-…
Redux Dev Tool - chrome.google.com/webstore/detail/redux-devtools
Vite - vitejs.dev/
Material UI - mui.com/

Thanks for watching.