The software world
GUI
graphical interface · graphical user interface
A GUI (Graphical User Interface) is the kind of software you drive by looking and clicking — windows, buttons, menus, panels — instead of typing commands. Your everyday apps are GUIs. It's the opposite of the
CLI, where you type instructions into a terminal. Claude Code Desktop is the GUI way to use Claude Code. Why it matters
Part of The app vs the command line → Knowing the word makes the whole Desktop-first idea click: the GUI is the friendly door most people already know how to walk through, and the command line is just a second, more powerful door into the same building.