I haven't left Firefox because of this extension.

marvelous

This is the single add-on that is keeping me on Firefox. Kept me here for years and I can't live without it :)

欢迎光临翻墙部落!
打开天窗，听听外面的声音!
穿越迷雾，寻找人生真谛!
https://github.com/osurf/jzdy/blob/master/README.md?

Can't imagine using Firefox without this add-on. Great work!

兄弟们，注册就送永久免费流量！试试就知道了!
这个真的好用！节点多，还稳定，看视频完全不卡！
5c5810fd.weaksharedptr.com
（手机电脑全平台互通）

So good I even remove the default tabs with some CSS tweaks.
Those complaining of lag you should try something like 'Auto Tab Discard' to unload tabs from memory if you want to have hundreds open for some reason.

after using ~one mouth going between tabs is lagging so it`s impossible to use

Thank you for this.
Best tool to arrange tabs imo.