Dev, please figure out what is wrong with your add on. Since Firefox updated my tabs vanished and appear to have been replaced by a sidebar added to Firefox that performs a similar function but not as well as OneTab did.

Perhaps OneTab being in the same location as the sidebar Firefox added is the cause of conflict? Auto Tab discard is functional and it does not use this same area. Tab Session Manager also works fine so that was the only logic I could think of. I love using this add-on and hope you'll take time to sort this out as it was the reason my computer RAM was being drained entirely and had been crashing out. I had to remove it to make that stop.

PLEASE fix, I'd love to use it again and I hate what Mozilla has done to replace it with their own sidebar. Can't you relocate this add on to the other side of the browser bar? Thanks for considering my request and I wish you the best of luck in this effort.

It doesn't open anymore

這是一個簡單易用的好東西，
直到Firefox大更新前都是。
今天大更新後，我的資料被清空了，
嘗試許久也救不回來，
是時候，該放棄這套工具了。

這套工具幫助了我許多年，
還是謝謝你作者。

Excellent way to organize my study searches and save memory and CPU

No cloud or sync

Good extension, does everything that an AddOn like this should do.

To all those who write that all of your data is lost in onetime.
Have you tried making a backup locally on the hard drive, after 100 pages saved in OneTab? Or do you all think that you can save an infinite number of pages without the memory running out?😒

very simple and easy to use

All of my saved pages randomly disappeared.

Fantastic tool and has been often reliable. I would pay them for this if I could.

UPDATE 2: I found it - when you run out of disk space, OneTab freezes, becomes completely unresponsive, doesn't save new links and doesn't open already saved ones. And most importantly: AFTER FIREFOX RESTART, IT DELETES ALL SAVED LINKS !!!

UPDATE: Today it deleted all OneTab data again when I had not enough free disk space. (I learned my lesson first time, I always back it up). It's not robust. Beware of that.

It works well. But I already have lost all my data (about a thousand links) in OneTab once.

Onetab is NOT a backup tool !!

Fortunately, it has a great import/export function that is very easy to create backups. So use it! Don't make same mistake as I did.