What are the tabs found at the top of panels called?

The term used to describe the tabs found at the top of panels is "Panel Tabs." These tabs serve as a way to organize and access different panels within an application, allowing users to easily switch between various tools or features. By clicking on a specific tab, a user can bring a particular panel to the forefront, facilitating a smoother workflow and better organization of information.

In this context, "Panel Tabs" accurately describes these elements, distinguishing them from other interface components like the "Toolbar," which contains tools for editing or designing, and the "Menu Bar," which lists available menus for various commands. "Tab Index" is a term typically associated with the order of navigation through interactive elements on a web page, rather than describing user interface components in a software application.