The most under rated add-on you can have for both FireFox and Google Chrome is easy to use and easy to setup up.
*NOTE: You need to use the 2FAS Mobile app for this add-on to work, but is free for both Android and iOS.

Finally, a 2FA I have been waiting for. Great Job! Normally do not leave reviews, but like I said, been waiting for something like this that just works!!! Gong to donate too!!!

love the ability to show the next code. much better app than google's authenticator

Finally !!! Thank you!