very useful

Amazingly easy to see and quickly delete tabs that I'm not using anymore. A godsend for a tab hoarder like me. Also makes it easy to copy a list of URLs from a particular window!

Mod strongly discouraged.
I usually set my windows or tabs using firefox bookmarks and it works fine.
But Onetab when it opens them again the tabs are all UPDATED AT THE SAME TIME!!!!
As a result, I reopened a window with 70 tabs and they were all updating 1 by 1 and loading all 70 at the same time, instead of doing what bookmarks do and putting them on hold.
So it took 20 m and crashed.
Fortunately, I was able to get other windows, the one it hadn't tried to open or the one where I'd put a lock... but when I relaunched the one that was loading, I had 6 tabs out of 70 ... lost forever ...

It's convenient when it works. Today is the THIRD time it has lost all my bookmarks. This time was without warning because I had not done anything that should have changed any settings.

If you do use this add-on, be sure that you are frequently exporting your list so that you reduce the amount of bookmarks you lose between OneTab failures.

Good except "Restore All" adds the the tabs in reverse order. wtf Fix the program please. TY