What is the official name of an application used on desktop or laptop computers?

The term "Desktop Application" refers specifically to software programs that are designed to run on desktop or laptop computers. These applications are installed locally on the computer's operating system and provide users with a range of functionalities tailored to the desktop environment. They often have full access to the computer’s resources, such as the file system and peripheral devices, allowing for robust functionality and performance.

Desktop applications can also work independently of the internet, which distinguishes them from web applications that run in a web browser and require an internet connection. Mobile applications, on the other hand, are specifically designed for smartphones and tablets, which have different interface and interaction requirements. System applications refer more broadly to software that is integral to operating system functions and can include aspects of the OS itself.

This clearly identifies "Desktop Application" as the correct definition when discussing applications specifically created for desktop or laptop computers.