X-Apps

Machine-translated from the German article

X-App (also X-Apps or X-App Project) is an open-source project initiated by the Linux Mint community, which aims to provide applications, libraries and components that can be used independently of a particular Linux distribution or desktop environment. Besides desktop applications, the project also includes tools, components for desktop integration, and libraries and resources for developers. The X-Apps are based on the GTK 3 program library and use classic UI elements such as menu bars, which work uniformly across different Linux distributions and desktop environments.