GNOME is a free and open-source desktop environment for Unix-like operating systems. It aims to provide an intuitive and user-friendly interface for users to interact with their computer. GNOME is developed by the GNOME Project, a part of the GNU Project, and is licensed under the GNU GPL. It includes a range of applications and tools for browsing the web, managing files, communication, and multimedia. GNOME is customizable, and users can install themes and extensions to modify the look and functionality of the desktop environment.