Developer tools for Frontend

Browser extensions

CSS Stacking Context inspector¹
React Developer Tools²
React Context DevTool³
Redux DevTools⁴
VisBug⁵: Firebug for designers

Desktop Applications

Polypane⁶: The browser for ambitious web developers.
Responsively⁷: Open-source DevTool for all web developers.

²

https://react.dev/learn/react-developer-tools

³

https://github.com/deeppatel234/react-context-devtool

¹

https://github.com/andreadev-it/stacking-contexts-inspector

⁴

https://github.com/reduxjs/redux-devtools

⁵

https://github.com/GoogleChromeLabs/ProjectVisBug

⁶

https://polypane.app/

⁷

https://responsively.app/