Atlas because tabs are vertical, and only changed to atlas from Dia because they made vertical tabs too (but switched because agent turned out to be really nice).
But non of them have ios apps yet, and non of them plan to do a linux app, so its far from nice place.
Firefox is the only browser that can cover that. Surf have linux, but doesnt have iOS.
Its crazy how it is pretty obvious how to become THE browser, its kinda easy (for some), and everyone is so slow with this given that they use Chromium and have stuff and money.
Perplexity Comet or ChatGPT Atlas, which AI browser are you using and why?