Its creators maintain three free editions of the operating system, and sell a professional edition. Zorin OS is fully graphical, with a graphical installer. For stability and security, it follows the long-term releases of the main Ubuntu system. It uses its own software repositories as well as Ubuntu's repositories. These repositories are accessible through the common apt-get or apt install commands via the Linux terminal, or a GUI-based software manager that provides an app store-like experience for users who don't wish to use the terminal. The OS also comes with a number of desktop layouts or themes to modify the desktop environment. The themes let users change the interface to resemble those of Microsoft Windows, macOS, or Ubuntu and allow the interface to be familiar regardless of the previous system a user has come from.