[ksec]

>with Firefox 4 until they removed it because "nobody used it".

Tab Groups remains a good idea on paper but no one has done a useful implementation of it. I remember during the Firefox 4 Tab Group era I purposed that Tabs from site ( Say HN ) and any Tabs opened from that site, for example I have another tab from this submitted links bugzilla.mozilla.org. All To be moved together into a tab group instead of just moving site to a tab group.

It was rejected for whatever reason.

[Cpoll]

This sounds a bit like an extension that nests tabs in a tree structure (I can't remember the name).

[alasarmas]

Tree Style Tabs?

https://addons.mozilla.org/en-US/firefox/addon/tree-style-ta...

[dvogel]

Both TST and Sidebery are leagues ahead of tab groups IMHO. Frankly sidebar tabs just work better for 16:9 aspect ratio because with a maximized window most sites don't make good use of 1/4 of the width anyway.

[coffeeling]

Huh? I use tab groups heavily in Brave. They're very useful, even if they're not nestable.

[CrimsonRain]

Try edge

[hulitu]

> Try edge

oh no. For some reason, the Microsoft's abortion makes tab groups when i move tabs, with no option to disable it.