Excellent! It's a must-have for daily usage!

The most important addon to keep me in Firefox!

gd, used for years

It is extremely useful, stable, easy to use.
I have been using it for four years now without any problems.
It can also create backups, which take almost no storage space.
Also fully open source and recommended by Firefox :)

Before this plugin, it was a mess to manage different windows between different contexts. Thank you for developing this fantastic extension!

2021-04-20

cool

This is what I needed from many years ago and finally I found it!

The most necessary extension for Firefox. It works very well until version 86.0.1, but it is "breaking" in version 87, consuming all the memory and crashing the browser. Even so, I prefer to use the old version of the browser and keep the add-on installed, but correct that, please, I would be very happy. Congratulations to the developers!