Where do you get that they are fundamentally different? From what I understand, Breach is modular, so the core probably is as minimal as in Vivaldi. (Edit: Who

Where do you get that they are fundamentally different? From what I understand, Breach is modular, so the core probably is as minimal as in Vivaldi. (Edit: Whoops, I understood you exactly in the wrong way.) From the overall technical design principles, they look quite similar.