If you're already on FF, you need tree style tabs. This extension is so popular it has its own extensions. I also have dozens of things I keep an eye on, so th

If you're already on FF, you need tree style tabs. This extension is so popular it has its own extensions. I also have dozens of things I keep an eye on, so there's no way tabs across the top would help me at all. Main things I find useful about TST: - You lose horizontal space, not vertical. This is great because you can now read the titles. I also do some magic to get rid of the tabs across the top, so I get some space back vertically. - You can collapse a given tree. - You can suspend a tab or a tree. Let's face it, most of your 1600 tabs do not need to be using resources. With suspend you keep the title and place so you don't lose it from your brain, but it doesn't sit there and eat RAM and CPU. - You can style the sidebar to your liking. I like to make sure mail and slack tabs are their own colour, because they tend to be project roots from which many other tabs are spawned, and when they're uncollapsed I want to visually separate a set of tabs from the next. I also highlight the current tab.