For now it's incredibly great. I hope it stays open and GNU forever. No mandatory "plus", "pro" and "ultimate" licenses per month. Thank You for this bro.

Please if can an android version of this app. I use Firefox nightly and the reference browser on my phone.
I like this add on for Firefox Nightly and Firefox asan build for my windows 11 laptop.

I am very pleased with 2FAS, but I can't rate the add on, I guess maybe Android 8 is not supported. I miss sys requirements in description.

Useful, but severely slows down some web pages

After watching the video, this extension is slower than freaking typing the code. Additionally, it doesn't even work for Firefox (Inactive Tab, please refresh this tab to use the 2FAS browser extension). I was expecting to be able to log into websites without having my phone on me, but alright one star will do.

Unfortunately, this extension is unusable for me. It appears this extension does not play well with multiple tabs. I often have 100-200 tabs open at any given time. As soon as I scan the QR code to link the extension to my mobile app, all of my tabs refresh at once presumably because 2FAS is doing something in the background for each of them. My task manager shows that my CPU and memory skyrocket. Firefox went from using 765 MB of memory to over 3000 all at once. Firefox became completely unusable and unresponsive; it took a very long time for my inputs to even register closing all my windows and tabs so I could even get Firefox's extension manager to load so I could uninstall it. As soon as I did, Firefox functionality went back to normal and it had no problem with how many tabs I had open. I was excited to be able to use this extension so I could use 2-factor authentication on my browser directly, but looks like it's not in the cards with the way the extension is currently implemented.

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.