Vivaldi has this built-in, they call it Workspaces. It's the #1 thing I like about the browser.
Firefox had this to back in ancient times, it was called Tab Candy, Panorama, or tab groups, depending on the release number. Then they killed it because "nobody used it."
Firefox had this to back in ancient times, it was called Tab Candy, Panorama, or tab groups, depending on the release number. Then they killed it because "nobody used it."