Created attachment 187823 [details] Annotated screenshot of tab groups in FF Since I found out about tab groups in Firefox, I absolutely love them for their effect on productivity. I would really love to see tab groups in Dolphin as well, since that is my application with the second-most tabs. If you don't know about tab groups, these are the important traits: - Tabs can be assembled into groups, by a number of GUI methods (context menu on the tab, dragging tabs into an existing group, dragging a tab onto another tab and holding it there for some time). - Tab groups are short-lived: once a tab group is no longer meaningful, such as when its last tab is closed, all information about it is lost. - When a tab group is created, the user may choose a name for it, and a color (few choices, only a limited palette) is assigned. - Tab groups are denoted by a special "group marker tab", which is colored, and all tabs of this group share this color. (see screenshot) - Most importantly, tab groups can be collapsed and expanded. A collapsed tab group consists of only the tab group marker, and thus takes up very little space in the tab bar. - Of course, ideally tabs are also saved and restored when closing / restarting the application. I know about the possibility to save tabs into a bookmark folder, but that does not solve the problem of always too limited screen space.