Does exactly what it's meant to do! I do have two personal suggestions, however:

The language of the settings, I think, should be changed, as they're a bit confusing at first. For starters, the "maximum number of tabs" is actually the tab number at which the extension will begin limiting; that is, I have the limit set to 11, but I can only have 10 tabs open at once. I feel that this should be changed so that the number represents exactly how many tabs you can have open at once.
Here are the ways I, personally, might change the rest of the language:
* "Above limit per window [if unchecked, applies globally]" -> "Apply tab limits to individual windows (as opposed to browser-wide limits)"
* "When exceeded, remove tab:" -> "When tab limit is exceeded..."
* "Newest" -> "remove most recently opened tab"
* "Least recently used" -> "remove least recently used tab"
* "Left-most" -> "remove left-most tab"
* "Right-most" -> "remove right-most tab"

* "And play sound:" -> "Play this sound when I try to exceed my tab limit:"
* "No sound" -> "Don't play a sound when I try to exceed my tab limit"

These may seem pretty pedantic, but I was a bit confused when I first saw the options. Finally, there exists a work around that should probably be addressed: if you set the tab limit to only apply to each individual window, you can open a new window and then drag the tab into the original one, thus exceeding your tab limit from that window. In my opinion, a global tab limit should be the default.

Awesome work!

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.

You have no idea how wide my smile was when I found this extension and started experimenting with it.

My workflow combines TreeStyleTabs, dozens of named virtual desktops, and Firefox's built in tab title searching ability. My tabs are an extension of my mind. But it's true! - I don't need 400+ tabs. The old ones just lose relevance after a while.

I configured a global limit of 200, waited for the extension to enforce it, and boom! my system's responsiveness jumped.

5 stars for what you have right now in v2.2.6 :)

I did run into a couple of issues, though, so I extracted your code and looked through it (pretty clean, thanks!) and I have a couple of comments:

1. I found a bug where the act of loading the preferences page causes the add-on to enter "current window limit" mode, regardless of whether it was configured to use "current window limit" or "global limit" mode until then. I think using a ?? rather than a || on line 141 of options.js fixes this.

2. The "Least Recently Used" strategy for removing a tab always removes tabs from the current window, regardless of whether the tab limit is enforced globally or per-window. This surprised me - I was expecting this strategy to remove the oldest tabs from all windows when the limit is being enforced globally. I admit both strategies are valid! My suggestion - split the current LRU strategy in two: "Least Recently Used (Current)" and "Least Recently Used (Global)".

3. I'm happy to see that the "last accessed" timestamp of a tab survives a browser restart! (I verified this!) If it did not, that would play hob with my setup. Just mentioning this here in case someone else was worried about it like I was.

I saw from another response that you don't have a repository anywhere, or I would have said all this in Issues or PRs or something.

I saw this is GPLv3 (thanks!) so I threw up a repo on GitHub with some changes. I'm not supposed to put links in reviews, but you can find it under user "mosbasik" and repo "limit-tabs". I've implemented the bugfix and LRU strategy split I mentioned.