Limit Tabs version 2.2.6 with Firefox 108.0 here. I created an account so that I could slap a five star rating to this add-on.

"Limit Tabs" is very simple and effective. Two weeks ago I had +2000 tabs open (Btw I'm using "Tree Style Tab" add-on). I forced myself to close unnecessary tabs with Limit Tabs, by lowering and lowering the max number of tabs, step by step. Now my max is 100 tabs. Quite a decrease!

(Btw another useful add-on to really clean up the tabtree is add-on called "Close Similar Tabs")

Now, I plan to stay under 100 tabs and Limit Tabs will help me with that too. Thanks!

ASD/ADHD here, I guess no surprise there. Recommending this add-on to anyone who needs push and encouragement in control over chaos.