I've long said Opera has the best tab management feature on the market with its Workspaces. That feature alone kept me using Opera for a long time. And although I'm still waiting for my favorite browser, Firefox, to come up with something to rival Opera's feature, another browser has beaten them to it. That browser is Vivaldi.
Vivaldi takes a slightly different approach to Workspaces, and it's just as good.
Also: Too many Chrome tabs open? Here's how to take back control
With Opera, the Workspaces feature resides in the sidebar, where you can quickly access any one of the workspaces you've created. With Vivaldi, the feature lives as a drop-down in a tab