I have found alternate web extensions for my favorite addons.But I'm unable to find any other alternative for tab groups.Will this addon be available before firefox 57 launches?

"Nice try", some said...
I'd say I won't upgrade Firefox anymore.
I'll stay with 56th version as long as I can.
Because, as others said already, without hiding tabs it is meaningless. We say here, we can't see the forest due to the trees. I have, for my work, around 70-100 tabs open in 7 groups, so it would be a total mess to have them open in the same window, regardless this tool does screenshots to help finding them.
I don't understand Mozilla's plan. I agree they need to go forward, but some features are mandatory. They should provide them or they lose their user base in no time. These features were their power, without these, a warm 'goodbye' and go to oblivion.
Just to point one more thing: I use a WE add-on that injects its things in the page (a weather applet). WE supposed to be safe but I think it is a new major vulnerability if addon's output is not isolated. Fake advertising if you want, or I apologise for misunderstanding WE's purpose.

My productivity was about to drop rapidly with the loss of being able to use Tab Groups. With this I finally got some of it back!

Can't wait for the show/hide groups to be resolved as that would make things so much easier.

Keep up the good work!

Thanks for this addon, if Mozilla provides the missing APIs / Options, it will be perfect.

But i found a bug : The tabs are in the wrong group after importation from Tab Groups datas (a group too far, must be in the previous one).

I like it. Helpful way to get an overview of your tabs and containers via an icon on the toolbar. Very similar in concept/functionality to "Sea containers", except via the toolbar instead of the sidebar. Personally, I use both.

This extension should be a lot of people need (If the audit passed ...)
Whether you can provide multi-language translation support with some websites and platforms? Maybe I can be able to contribute Simplified Chinese.

Tab Groups triples the productivity for me. I can't even remember how I managed with it. Was it Mutiple browser windows, what the hell.

The addon has it's heart in the right place, I hope it can become functional replacement at some point. I will certainly keep an eye on this addon and update my review.

To Mozilla: Thanks for killing Tab Groups, not once but twice! I'm begrudgingly sticking with Firefox but Chrome and Edge are the browsers I will be suggesting to co workers and family from now on.

To me, the most imported feature of Tab Groups is hide some tabs and show others. sadly container can't do it for now. But this is a good plugin.