Works flawlessly! My only complaint would be that it's a little slow to startup on HDD-based systems, and prevents tabs from loading content until it's finished "warming up" (which can take up to 30 seconds)

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!