Debian is a widely-used, subscription-based operating system designed for individuals and organizations. It is available for free over the internet, with options for installing the stable version or testing newer releases. Users can experience Debian without installation by booting from a live CD, DVD, or USB. The installer, starting from Debian 10 Buster, utilizes the user-friendly Calamares Installer, making the setup process straightforward. Debian supports a variety of languages, although its primary language is English.

Debian caters to a diverse audience, including mid-size businesses, small businesses, enterprises, nonprofits, and government organizations. It integrates with numerous applications and services, enhancing its functionality. Support is provided online, and comprehensive documentation is available for training purposes. With its robust features and extensive integration options, Debian remains a popular choice for users seeking a reliable operating system.