[albru123]

Unfortunately Simple Tab Groups (or maybe some internal feature it uses, probably hidden tabs) somehow leak resources and end up eating all the RAM for me.

The end of Panorama (or Tab Groups as known nowdays) was a disaster for me, as I don't hesitate having over 3k tabs open.

[nexxer]

I've been using https://addons.mozilla.org/en-US/firefox/addon/sync-tab-grou... for hundreds of tabs.

When I open up a tab group with many tabs in it, the extension loads all of them up (snoozed) in a way that takes a little bit of time to complete, but it works well.

[nevster]

Is Simple Tab Groups the current best replacement option? I still haven't upgraded from FF56!

[qiemem]

I use https://addons.mozilla.org/en-US/firefox/addon/panorama-tab-... and have been really happy with it.

[executesorder66]

You can also try https://addons.mozilla.org/af/firefox/addon/conex/

Works similar to tab groups, but each group is in it's own container.

[Vinnl]

There's also Panorama view: https://addons.mozilla.org/en-GB/firefox/addon/panorama-view...

[nicoburns]

IMO yes, and I've tried a few. It's only really now that the new tab group plugins have reached parity with the FF56 versions, but they have done :)