A setup program is a type of software designed to install applications on a computer or device. It typically guides users through the installation process, ensuring that all necessary files and configurations are correctly placed. Setup programs often include options for customizing the installation, such as choosing the installation directory or selecting specific features to install. These programs can be found in various formats, such as EXE files for Windows or DMG files for macOS. They help streamline the installation process, making it easier for users to get new software up and running without needing advanced technical knowledge.