Love it!
As a scientist I do a ton of online research, and I have not found anything better to organize and keep URLs, or to save an ongoing search in a split second when I need to go and close the browser. The glitch of the last update has been fixed, as indicated by the developers. You can backup, which I recommend doing once in a while if you have a whole library saved in OneTab like I do. It takes less than 10sec.

The firefox app has been fixed (as the developer noted) - honestly I tried a few alternatives to what OneTab does and none of them are even close. OneTab really helps out to save links and even pick up work from the day before, if your work is mainly browser-based.

Until the recent bug it has always worked correctly.

Lifesaver. No more sluglike browsing. No more pkill firefox. No more REISUB. Thanks a million!

This add-on has been a lifesaver for years, helping to manage all my tabs. Recently I thought I'd lost them in the latest update, but OneTab tech support showed me how to fix the problem in just ten seconds. Highly recommended!

An excellent add-on, I could not live without onetab!!

Hasznos

Easily one of the most helpful addons I use for managing memory and clutter. The team is rapid to respond to bugs as well.

OneTab is an immensely useful extension! I use it to keep track of projects, hold collections of favorite sites, and send batches of research to my friends and colleagues. The support team is also very responsive and helpful, and they released an update fixing an issue I reported within three days! Would very much recommend OneTab for managing your web browsing!

This addon is fantastic! Firefox's newest update did mess with it a bit, but the Onetab team quickly fixed the issue and now it's working again perfectly! You just have to update OneTab andeverything should work, with no data lost! The Onetab team responded quickly to my support request and I'm very impressed by their dedication. This addon is so so nice and I wouldn't be able to enjoy the internet without it.

Update 2/18/2021--I still love this add on so much! If I didn't have it i simply would not be able to function on the internet without it!

The latest update fixed the previous issue. Thanks.

Despite the recent glitch that was a FF issue to begin with, OneTab remains one of my favorite add-ons...

OneTab has been one of my favorite addons for a few years now. It's simple, easy to use, and always maintained. I highly recommend it to anyone who needs to organize tabs and keep them for later, or even share them with someone with just one click.

Love this extension! It finally allowed me to stop saving temporary links to my bookmarks or notes and cleaned up my browser. I use it every day! The development team behind the extension is great, very responsive to any problems or bugs (which are rarely the case). It's a must have for everyone!

Great app, always being maintained, they had a bug for a few days and quickly fixed it. They get back to you when you contact them, and are constantly working on adding new features.

Really great tool if you want to keep group of tabs that you want to open and close together (e.g. a group of tabs for work, a group of tabs for studying, a group tabs when playing, etc...). Really appreciate the devs for rolling out the update on the usability issue on firefox.

Honestly this addon has been a life changer for me. It's almost as valuable as uBlock Plus imo.

I've had it for a long time now and the only issue I've ever experienced with it was this past weekend, but I emailed support about it and they were quick to put out a fix and give me an update on the situation.

I really hope people update their reviews because they couldn't wait a couple days. Because this extension is totally worth it.