Thank you for being the only add-on I could find that replicates Chrome's tab grouping!

Would love the option for the tabs in each group to be highlighted constantly (ideally as the group icon colour).

I am required to use Edge for my work device & while not being able to use Firefox's extensions is frustrating, one advantage Edge does have over Firefox is tab grouping. I do like Edge's method of grouping tabs in 'folders' that appear by name in the tab bar. Firefox has no such functionality, which is a shame. This extension is the best stand-in for that functionality, and while it is not as refined as what I am used to, I assume that is more a restriction of Firefox rather than the developer's abilities. Overall, very good.

As everybody else is saying in the coments, glad to find this extension, as it was a deal breaker to me using mozilla at this point. Thanks Nameless Guy.

I use Chrome at my work and I got used to tab grouping and helping me stay low on the laptop resources while keeping productivity.
I prefer firefox in my own computer cause privacy reasons, but to me is the one of the big browsers which is behind in user experience. With this add-on, things leverage a little for me.

Hoping this extension keeps improving and either mozilla implements it natively or give this developer the tools to replicate or even improve Chrome Tab Grouping feature.

not as good as in chromium based browsers, but still usable (without suffering even)
God bless you!

Works mostly perfectly as far as I'm concerned, and those missing things are the fault of firefox, not the (active) developer. Good plugin!

This is exactly what I wanted, which was something similar to chrome tab groups where it keeps tabs within a single window and I can see the name of the tab group next to the other tabs. It lets you color code them now too, and it required a lot fewer permissions than other add-ons.

Exactly the kind of hold over I was looking for while I await the great Chrome Purge of 2024.

Tried almost a dozen different add-ons, working down from popularity, and this was the first that does a good job of approximating Chrome groupings (in the tab bar, collapsing, colour-coded, etc).

Should I maybe learn to not sit on hundreds of tabs I organize into work flow projects and hobbies to only not look at the grouping for literal years? Possibly. Should I re-learn to bookmark and use website specific save-profiles like it's 2006? NEVER!

Thanks Dev bud!

I've been looking for a plugin like this for a while now. Chrome-esque groupings without having to use chromium browsers.

A good approximation of Chromium style tab grouping. There are issues, but I assume that's based on the way Firefox itself is built and limitations in circumventing those designs. It essentially does what is says on the tin, but it's moderately to extremely janky. Hopefully it will get smoothed out in the future.
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One of the more impactful/frustrating issues I've run into (and the work around) is:

After closing a browsing session and reopening Firefox, one of the windows' tab groups no longer displayed, however tabs continued to hide/show themselves according to the invisible group's functionality. Unfortunately these were a group of tabs I intended to work through.

In order to access any of these hidden tabs, expand the tab menu (the inverted carat to the right of add-tab button). Go to hidden Tabs and select one. Since the Tab Group's logic still functions, this opens the selected tab and all others that were in it's group. However, the group doesn't appear so leaving the group will cause the issue to persist.

Shift+Click to select the tabs in the malfunctioning group. The Right click and add them to a new group. This new group will be visible and functional.

Kind of a pain that this is necessary, but it beats not having tab groups at all

As close as it gets to chromium-style tab groups. Much simpler to use than the other chromium-style tab groupers in the addons store.
One feature that I would love to see would be an option to always keep the grouped tabs highlighted in a color, and when collapsed, keep the tab grouper highlighted in that same color (and make the color customizable, similar to chromium).

Great Chrome-like Tab Grouping for FireFox!

[Updated review]*
There are a number of glitches with this that can still be worked out, but some of them can sort of be considered features in a way. Not too sure how much support for this Firefox has, but core issues that previously existed (a key one being that closing a window with a tab group that was not the last window opened disabled the function of tab groups that were opened, meaning tabs needed to be reassigned into a group to function again -- this is no longer the case as they groups function when windows are re-opened using History)

Groups Tabs do not have the ability to collapse the group they belong to still, so the workaround is to have a tab outside of the group to click on to collapse the groups more easily

Moving multiple tabs into a Group Tab will move each tab individually - which can be a slow process. If you are mass moving tabs into a Group, please make sure you do not change the Group Tab name in the middle of the process of the tabs being moved, or you may end up "losing" some tabs (they exist, they're just not accessible until you fiddle around a bit such as disable the Extension due to them being hidden under a group that exists but isn't visible on your tabs list)

Moving multiple tabs within a group to change their position can also glitch up a bit. Normally, if you move tabs individually, they will be confined to the bounds of the Group. If you move them as a group, this can potentially glitch up and allow tabs to be positioned outside of the bounds of the Group (eg. very front of the entire set of tabs in the window and in front of all sorts of other tabs that are in front of the Group Tab -- instead of being at the very front of the set of tabs contained within the Group and immediately behind the Group Tab). I consider this almost a feature. Issue is... this messes up the order of tab positions, so your new tabs may end up popping up in unexpected places and not immediately behind the tab you are opening said new tab from

Overall, fairly usable with a few glitches here and there. If you've tried this extension before and had issues with it (eg. the whole issue of Group Tabs not functioning after reopening a closed window during a session), it may be worth checking out once more to see if the issues you've had were resolved

This is where it's at, if you need tab groups for Firefox. The other extensions are too odd and obtuse for me, and this replicates Chrome-like grouping.

Closest tab grouping I've found compared to Edge's "tab islands." Having tabs grouped and hidden but leaving behind a group tab is very helpful. Thank you!

A way to keep tab groups across browsing sessions (after browser restart) is needed.

Colored grouping was mentioned before and would help with visual organization. I'd also take colored/unique tab group favicons to more easily see the difference between my groups.

The ability to keep a tab group expanded when none of the tabs are active would help if/when group coloring exists so that all website titles and favicons can remain visible yet clearly grouped.

Very good extension. Things missing off the top of my head are tabs being grouped by color and a way to backup or keep them consistent across devices.

If you're looking for a direct alternative to the way chrome groups tabs, this is it. I'm not joking, I looked for 3 hours. There are definitely improvements that could be made to the appearance of it all but the pure functionality outweighs that.