Arc browser needs to be applied to download. It is only for MacOS and ios. I have only experienced the MacOS version.

Vertical Label

Arc Browser uses vertical label default.

Space

You can create a space to classify your website,  such as code | design |work | daily, you can switch the space.

There also is a unique space named profile, which means you can create an area that does not share the account\history and so on.

Create space
Arc Space

Pinned Page

Click the icon or tab, Arc will save the page, it won't refresh the content. For example, If you open the homepage of Youtube and open a new website, when you go back to Youtube, the content still be here, not changed, not refreshed.

Split Screen

That's easy, just drag the website to another, vertical and horizon are both supported.

Other Function

You can also create new easel\note and boost, but I never tried them cause I use other tools.