Comment by AlienRobot

Vivaldi is the only browser I feel actually has features. Built-in RSS client, mail client, vertical tabs, workspaces, notes, saved sessions, tab groups, side by side tabs, profiles, etc.

To put more simply, just look at how many preferences its preference dialog has compared to other browsers. It feels like nobody else is even doing anything except coming up with a new CSS property nobody is going to use every 3 months.

Everyone says they love Firefox, but every time Firefox adds a new feature it's a feature Vivaldi already had for years.