Could be an excellent Add-On, but has problems with keeping data when Mozilla releases new firefox versions. I recommend strongly to frequently save links to a text file. Otherwise you must restore lost tabs from firefox' history.

I've been using OneTab for the last four months and I loved it. I was now working in three projects with around 50, 20, and 15 tabs each. I was able to just group all of the tabs when I was not working in a specific project. I loved that I was able to name each group. But today, when I updated Firefox to the 80.0.1 version, OneTab did not reload my lists of tabs. It was just a blank page. I copied the URL, I restarted firefox, I also restarted windows... It did not help, OneTab was just not working at all. So I removed and installed the extension again. it works now, but it won't reload my previous lists of tabs. I have lost research work done during several months. I can't believe it.

Right now I am just trying to find an alternative.

Great Addon, just lacking a dark mode. Please add it & save me from going blind at night xD

Excellent extension. You can save your open tabs, rename the group share and save. I find it really useful.

Disappeared with all my data!!

Пользуюсь во всех браузерах. Нет резервирования списков - приходится делать это вручную.
В Firefox 80 периодически "пропадает" OneTab - приходится идти в меню "Расширения" выключать и снова включать OneTab. Несмотря на многолетний стаж расширение недоработано, на мой взгляд. С первого момента его создания, сколько бы оно не обновлялось, не вижу никаких улучшений. Жаль, что хорошая идея не реализована в полной мере.

User experience becomes increasingly broken after each update. First it deletes all tabs (the one thing it's supposed to do), and it updates and it won't function unless you manually restart it each time you want to use it (and some people have also lost all their data)

When it's working it works, but that's the only thing I can really say, outside of those times it's an unreliable mess where you spend half your time counting down until the next time it deletes everything

[I am changing my rating from 4 to 5 stars, since the Firefox bug has been fixed.] I "can't live without" OneTab, as it's THE daily tool I use for tab management. LOVE the simplicity & functionality! Way better than bookmarking tons of pages I'm reading/researching but may not want to keep later. BUG NOTE: Reviewers who still have problems with the bug simply need to update their Firefox browser. (Even if you don't, the work-around on old browser is very easy. We didn't LOSE our old links like some have reported, though it was very upsetting when it seemed like we did.)

This add-on is working perfectly once again. After a slight glitch, everything works as it should. One of my fave add-ons, as it reduces tab clutter instantly! Highly recommended.

Edit: Developer fixed the issue and quickly responded to my review. It was an unfortunate bug but I am happy with their fast updates and customer service.

Great add-on but the last update broke it. I need to disable and enable it to get the add-on to work

A very good addon until the last update. Now I have to disable and re-enable it each time I open firefox to get it to work.

Je trouve cette extension vraiment bien MAIS elle se désactive systématiquement à la fermeture du PC!!! bref si ça continue je chercherai une autre application. Décevant

Lost all my tabs in the last release. Tried all the fixes, turned off and on, and did a reinstall. Use the export feature to back-up my tabs, but it doesn't save the headers, or the starred order, so, more work. It seemed okay but today the whole add-on has disappeared? Very poor, have given up on this add-on. I'm using Simple Tab Groups instead, at least it works.

It's a very good tool for saving the state of your tabs and then go back to them ,when you need. Very useful for IT jugglers.

For all of you who have problems after the September 16 update, I guess the solution is disable and re-enable it. No idea why it broke after the sept 16 update but it seems to a viable solution. Otherwise, OneTab is a wonderful extension that does exactly what it says. It's one of my most used extensions. Hopefull the OneTab team could help fix this issue.

OneTab's icon keeps disappearing every time after browser restart.... I think it has started recently.... It is there, but transparent, or without an icon, then I have to go into Extensions - Disable - Enable again, then I have the icon, next time it is disappeared again...

For those who lost their data:
Just close and restart the addon.
(You don't even need to close Firefox.)

I've been using One Tab for a while, and I love it!! After the update on 16 Sept however, I opened my computer to find all the sites listed on my One Tab had disappeared, and the icon wasn't showing properly on the toolbar.
GOOD NEWS!! After I read some reviews, saying they disabled the add-on, restarted, then enabled it again, everything was restored!! Yayyyyyy!!
5 Stars!! ⭐⭐⭐⭐⭐
To all those users who had the same problem and bagged it out in a review, I suggest you try the above fix, and then change your review!! 😊

I lose everything in a moment. Installed on 3 of my 6 profiles, after restart the onetab tab show nothing and the icon button doesn't respond. I recover 2 of 3 profiles tabs with a lot of work.