Safari doesn’t offer a full implementation of vertical tabs. It’s still not possible to hide the horizontal tab bar. I’ve also found Safari’s vertical tabs to l

Safari doesn’t offer a full implementation of vertical tabs. It’s still not possible to hide the horizontal tab bar. I’ve also found Safari’s vertical tabs to lag behind the state of the horizontal tabs. I like Orion and Arc. Both browsers have good vertical tabs implementations. I like some their other features, but I would prefer to use Safari full time.