In the same vein I'd recommend Sidebery https://github.com/mbnuqw/sidebery https://github.com/mbnuqw/sidebery for tree style tabs. It has more sane defaults, e

In the same vein I'd recommend Sidebery https://github.com/mbnuqw/sidebery https://github.com/mbnuqw/sidebery for tree style tabs. It has more sane defaults, even some animations, very accessible customization (e.g. you can theme every bit of bar in extension settings, not needing to go to chrome.css). It's also can be used as a basic browser "window manager", given that you can't split window into panes, but you can have multiple tab groups in one window and quickly switch between them.