I tried Chrome’s new experimental Split Tabs feature and it completely changed how I use my browser

Google is testing a new experimental Chrome feature that lets you view two websites in a single tab for improved productivity ...

Vivaldi browser adds ‘The Tab Button’ to cut down on tab clutter

Vivaldi's web browser for Windows, version 7.6, adds a new "tab button" that can be used to search and pare down existing tabs in a bid to make it easier to find and use what you want.