Open source browser design tools
отлично, но не с 1 раза открывается
The best one I've found yet
it didn't open up when i clicked on it
https://builder.io
https://responsiveviewer.org
https://csspeeper.com/
Hoverify
https://getcssscan.com/
leocompson
http://www.felixniklas.com/
https://daily.dev/
https://gimli.app
Redux DevTools
toptal.com
M.ed
