Edge's vertical tabs are game changing, exceptionally useful and well-executed. No combination of browser extensions comes close (for me).

That's literally the only reason I use Edge. I want someone to release an "Edgium" like vscodium or, alternately, implement Edge's vertical tabs in Chromium.

This looks basically like Tree Style Tab for Firefox only without the nesting of related tabs.

TST is great, but it's nothing like Edge vertical tabs, which contain exactly the right amount of functionality for zero friction use. I have tried to get the same effect in Firefox, Vivaldi, pretty much anything that isn't Edge, but I keep coming back to Edge because it is so central to how I use the browser at a basic interaction level and, simultaneously, so simple to use that I can put up with (and deactivate) the other annoyances.

When you add "groups" (e.g., folders) it is magical.

I recently started using vivalid, which also has vertical tabs baked in. I tried some firefox browser extensions but I find them to be really sluggish and feel tacked-on.

Brave has vertical tabs built in nowadays (though they're behind a flag, but they're more or less mature now), designed in a very similar way to Edge's.

https://imgur.com/a/dAAysvy

I'm shocked people still ask these questions or act surprised 10 years after the Snowden leaks.

That’s basically what Edge was originally (along with some silly “write notes on any web page” feature that I’ve never seen anyone use).

Yes, Chromium still sends data to Google. That's why ungoogled-chromium exists. Same question though - why don't HN people use that?

Well I use Firefox as my primary browser, but one of my reasons for not using Chromium is the lack of automatic update functionality. Most of my software I don’t want auto-updating, but for my browser, I do want a notification of updates, and a single-click to install.