Comment by tiltowait

Arc isn’t unique for it, but vertical tabs would be a boon for most “ordinary” people I know. When I look at others’ browser windows, they usually have so many tabs open, they can only see favicons, and sometimes not even that. Vertical tabs fixes that—but it’s a feature, not a product. If that kind of feature caught on, absolutely nothing would stop Chrome, Safari, Firefox, etc. from implementing it.