Freedesktop.org is a website that provides a platform for the development of free and open-source software (FOSS) for desktops, laptops, and mobile devices. The website acts as the central point for standardization of desktop-related technologies used in various Linux distributions. It provides a forum for developers to collaborate on various software projects that can be used across different distributions. The website also provides documentation, recommendations, and guidelines for developers to build interoperable software. Overall, freedesktop.org aims to improve the usability, functionality, and performance of Linux desktops through the development of open standards and tools.