There is something called “Tab Groups” and most people are still unaware of it. Even if they are, they do not know how wonderful it could be to use this feature. Its much more than just creating groups.
How to Access Tab Groups
If you want to get hold of this unnoticeable feature, click on the small arrow at the extreme right of your open tabs; besides the + button to add a new tab. A menu will drop down where you may find the Tab Groups feature along with the list of all sites currently open. Alternatively, the shortcut key combination is Ctrl+Shift+E.
Link: Lost In Technology