It works.

Not working for me developing on localhost. FF ver 98

It works perfectly well on the latest firefox！

does the trick!

Big problem: addon does not remove cleanly. CORS disabled when addon is removed.

Funciono perfecto, gracias no quería pasarme a Chrome XD

CORS still in effect even if the addon has been activated

First, it's disabled by default. Second, enabling it seems to do nothing but turn the icon green. The CORS security idiocy still happens.

Best cors tool, no deconnection reconnection, works perfectly

It's promising, but last updated 2018? It does not work with Firefox 86. There's no option to disable CORs because at the current rate. Mozilla continues to disregard respect for users intelligence because Mozilla knows whats best for them.