I decided to install Safari's preview version on my Mac today, and I know people have flogged this dead carcass over the past week but damn is it fucking terrible. They rip off Vivaldi wholesale with tab groups and colorization based upon content but fail in really weird amateurish ways to make anything usable.
It's nearly impossible to tell which tab is the active one at any given time because there's no continuity with the rest of the UI, and I can envision sometime in the not so distant future where some clever nasty people start phishing off of people using Safari because of how the bottom bar just disappears into the content. Even when colorized Vivaldi still has a crystal clear separation between UI and content.
Single user instance for Dustin Wilson