Multi Account Containers is also good.

Multi Account Containers is the key reason I use Firefox. I have to juggle multiple accounts for the same services for work. Containers makes this trivial. The closest chrome has is profiles which require a separate window and are just generally far more painful to use.

Temporary Containers as well. An entire throwaway container by default. I can just accept all the cookies and closing the tab deletes them all. No management. Nothing else comes close.

I'm glad this exists (although it appears there are extensions in other browsers that do the same thing) but I never have more than 10 tabs open, so it's not something that would make me switch.

> I never have more than 10 tabs open

How is that possible? Do you never compare things? Or do you only compare things for which there are fewer than 10 alternatives?

I cannot tell if you're kidding or not.

I'm glad it exists too. If you ever have a need to juggle tabs this extension is a godsend. Believe me, I've tried finding similar functionality for Chrome/Edge and aside from Edge vertical tabs, the rest are a kludge at best.

I've been using Firefox straight for 10+ years and tried all major vertical tabs extensions and now I recommend Sidebery to everyone.

Sidebery is great, but I had to switch back to Tree Style Tab because I hate animations, and while Sidebery is impressively configurable, not all animations can be disabled (https://github.com/mbnuqw/sidebery/issues/517).

> Edge vertical tabs is your best choice if you must use a chromium browser, however it is a weak imitation of TST.

What makes it weak?

What are you talking about exactly? Is this an extension for FF?

It's this extension: https://addons.mozilla.org/en-US/firefox/addon/tree-style-ta...