Holy crap, how many TB of ram do you have! My FF uses several GB with just a few tabs open lol. I usually have under 10 tabs open myself unless I'm in the middle of something then I tend to keep opening new ones so I can go back to the others too.
FF is good about RAM. I keep more open than the OP, sometimes, and it's rare than a 64-bit FF variant will use more than 5-6GB, even though I have a few times that much free. It can also handle 100+ tabs total with 2GB RAM systems (non-upgradeable Chromebook
), and remain acceptable (though it noticeably slows down in that case around 50-70). FF does gradually slow down, but not enough to make it a problem, except on very bloated sites, like Amazon, IME, provided one is already running extensions like uBlock Origin, Ghostery, and Noscript, to block CPU and RAM hogging useless junk.
14 in Chrome, 13 in FF. 4 tabs are onion articles
I use this handy feature called a "bookmark" and I make "folders" to arrange the "bookmarks" in.
I used to use bookmarks. Now I use persistent sessions, and cheap RAM. Really, I just think nothing of opening a new window, opening more tabs, culling the useless ones, and then leaving the rest, if I want to go back. I figure out where things are by the patterns of favicons, with the tabs allowed to go really tiny.