It's good.

Great extension

Switching from Chrome to Firefox, I was missing The Great Suspender there. This extension does the job except for the total number of open tabs.

I encourage the developer to add this feature and also to make it open source (so I can participate in the development too).

Great job!

You set a number of tabs that can be opened and if you try to open more tabs over the number you set, a message will appear saying that the last tab was blocked. Very useful for people that want to be organized. I was having issues because that when I saw I had over 300 tabs. But this great and simple add-on prevents me to open more tabs that I can handle.

it works