Rated 5 out of 5 stars

le ooofest ar DFómh. 24, 2017 · buan-nasc

Admittedly, I sometimes have over 100 tabs open and this extension is mandatory for finding my way among them in a quick, logical fashion.

I did recently note that it is listed as "Not compatible with multiprocess" setting in recent Firefox releases, which would seem a nice upgrade consideration by this author.