The closest thing right now is Orion. It does the vertical tabs and the page modification in the same way. Webkit based.
It's made by the Kagi guys who I really agree with - bootstrapped and not VC backed. A sustainable business. And charging for a service instead of making your customers the product. That's real ethics to me.
Their browser is not open source, though, which is a major blow. But it would seem most browsers are not truly now, if you look into it.
The reason I switched was because it is the only browser that, on iOS, allows chrome/firefox plugins. I'm not even sure how they're doing this as I thought banning non-crippled plugins was part of the 'device is not mine' policy from Apple. But it's there. All my plugins. Including the ones I made myself.
I realize this sounds like an Ad. Not affiliated. I just think they're doing good stuff.