Also on Firefox. It appears that I'm not as privacy/security conscious as are most in this thread, but I heartily second HTTPS Everywhere.

However, the single Firefox extension that's indispensable to me is Tree Style Tabs. See: https://github.com/piroor/treestyletab.

Is it possible (for a Web page hoarder like me) to organize and access 500+ tabs across seven Firefox windows? You betcha it is, with Tree Style Tabs.

Newer versions of firefox and other major browsers have a HTTPS Only mode now, which removes the need for HTTPS Everywhere and it will be deprecated -> https://arstechnica.com/gadgets/2021/09/electronic-frontier-.... You can enable HTTPS Onlu mode on firefox under settings -> Privacy & Security

In the same vein I'd recommend Sidebery https://github.com/mbnuqw/sidebery for tree style tabs.

It has more sane defaults, even some animations, very accessible customization (e.g. you can theme every bit of bar in extension settings, not needing to go to chrome.css). It's also can be used as a basic browser "window manager", given that you can't split window into panes, but you can have multiple tab groups in one window and quickly switch between them.

Can Sidebery import TreeStyleTabs tree data if I switch to it?

I've played with Tree Style Tabs, but it seems like there's some configuration required for the optimal result. So I ask: have you done any configuration changes to it?

I have custom css to hide the tab bar from the top.

I also shrink it down when the mouse isn't over it. See the screenshots for mouse out and mouse over look.

Mouse not over tree tabs: https://i.imgur.com/ikQhxTM.png Mouse over tree tabs: https://i.imgur.com/TyRds6V.png

Works well for me.

Could you please post your userChrome.css that you use to achieve this? Looks very neat to me, but I don't know how to configure it.

I edited userStyles.css to remove the browser tabs from the top of the browser so that only the tst tabs are visible, plus in the tst preferences I added some css to highlight certain tabs such as email and slack. I also added some styles for suspended tabs and removed the a scrollbars.

Also a TST user. It take some getting used to, I don't think I'll ever go back to using horizontal tabs. It is very much functional out-of-the box and it comes with a lot of preferences to choose from. However for a cleaner interface you'll have to customize your UserChrome.css.

This is what I'm using right now - https://pastebin.com/bKHM8hp9

I change the theme and the opening tree behavior do it doesn't nest endlessly. I think I also put to open new tabs at the front of the children, so it is immediately preceding the parent. Just use it for a bit, the top tab bar is so silly.

Ah, a fellow Tab Hoarder! I've been using Firefox quite a bit lately and I really like Tree Style Tabs

> to organize and access 500+ tabs across seven Firefox windows

What motherboard did you get to have one terabyte of RAM? :D

Don't need anywhere near that much. On this 2012 PC with 32GB of RAM I have 3300 tabs open in Chrome and 3100 in Firefox. Plenty of RAM left over for other things too. I use The Marvellous Suspender for Chrome and Auto Tab Discard for Firefox to keep the memory and CPU use down. Session Buddy for Chrome makes it easy to manage them. I don't have anything as good for Firefox though (I'm using Session Boss, but would like something better).

When ff is set to restore tabs on launch, it does not load them until you click on them. There are also extensions that allow you to unload tabs without closing them. I've never been a fan of bookmarks for whatever reason and tend to have many of the same tabs open for months at a time.

HTTPS Everywhere is going away next year. For more details see https://www.eff.org/deeplinks/2021/09/https-actually-everywh...

Just in case you didn't know about this: https://www.eff.org/deeplinks/2020/10/privacy-badger-changin...

I remember finding out about it in a thread on reddit, they concluded that after this change there is no point in using privacybadger if you're already using ublock, for example.