I can quickly save and close multiple tabs, freeing up resources, speeding up my computer, and saving tabs I want to use in the future. Awesome.

FirefoxはQuantum以降複数タブでのパフォーマンス上げる用になったので当然メモリ使用率あがったのでOnetabの重要製がマシました。
私は大体30くらいタブ作るんですがそうすると余裕で1gb以上は使うのでこいつで管理すれば元のメモリ大体500ｍｂくらいになります。

One of my four essential Add-ons. Losing OneTab would seriously affect my productivity!

I love OneTab, it constantly saves me from Tab Adiction...

ADDED ON MY MAC!!!!!!!!!! AT LAST!!!!

This helps organize my tabs while saving memory. It really works.

Moved to Firefox from Chrome. My old App (Tab Cloud) was not supported so I moved to One Tab. I am happy with the app, Had a small learning curve as I lost all my saved Tabs when I restored them. Found the options page and made some changes so this no longer happens. A very fast app that gets my mornings started off with all the web sites I check each day. I recommend One Tab.

great

Great extension ! Very useful and easy to use !

Highly Recommended!! Does Exactly what it promises... simple & effective. Love it!

Excellent idea and execution. By the end of the day I may have as many as 200 to 400 tabs open (many of which I don't need, but others which I do). This makes managing these so much easier. Nice work.

Great add-on, really do a lot help while this QUANTUM disaster ruined TMP.

the best addon! so useful!

It's because of IME, not browser or addon, sorry.
(X)Can not named the group...Ubuntu1404(x64) and FF57.

very nice

Really useful! I love it!
(My only complain: it doesn't on Firefox 57 for Android)