[pantulis]

Most browsers except Chrome have some sort of vertical tabs support.

- Safari (Mac) has a vertical tabs, but a very confusing UI, mixing Profiles, Windows and Tab Groups (only 1 level).

- Edge has Workspaces and Vertical Tabs, along with Groups (only 1 level).

- Chrome does not have vertical tabs and has 1 level groups

- Vivaldi has vertical tabs and groups, not sure how many levels of grouping.

- Firefox has Containers and Vertical Tabs (today), but for best results you still need something like Tab Stash, Sideberry or TST.

- Orion Browser (Mac) has the best UI imho and allows for grouping tabs at as many levels as you want, but you cannot have proper "folders", only nested tabs.

- Arc gets everything right, in my opinion, but I do not specially care much for the candy UI.

[generalizations]

I'm surprised that none of them support tree hierarchies (like tree style tabs / sideberry), which IMO is the reason to use 'vertical tabs' in the first place.

[jwells89]

I believe it’s likely due to usability issues on increasingly common small laptop screens. On a 12/13” screen for example hierarchal sidebars become a truncated mess after only 1-2 levels of nesting unless the sidebar is expanded and eating up valuable main content space.

Personally even 1-level vertical tabs are valuable because labels don’t get truncated or hidden nearly as badly as they do with traditional tabs, plus vertical scrolling is more natural and effortless than horizontal is. Additionally, most screens these days have tons of width while height is at a premium, and vertical tabs takes advantage of that.

[freediver]

Orion browser does, all natively.

[osbulbul]

Actually somehow Safari has fastest load times, it just feel faster than anything. But man, I think it has ugliest UI :( I want to use Safari inside arc UI

[diggan]

> Actually somehow Safari has fastest load times, it just feel faster than anything

I guess that's easier when you only care about one platform, and everything that comes with it.

I wonder how fast you could make a browser if you don't make it cross-platform and only support usage on Linux for example. What things could you do if you don't care about cross-platform support?

[jwells89]

Linux WebKit browsers are pretty snappy too. I think it just boils down to what each browser/engine team prioritizes.

[reginald78]

IIRC very early versions of Chrome actually had native vertical tabs and then they removed the feature at some point.