Kubuntu is an official flavour of the Ubuntu operating system which uses the KDE Plasma Desktop instead of the Unity graphical environment. Developed by Canonical Ltd
License: Open Source
Debian is known for its stability and robust package management, making it ideal for servers and advanced users. In contrast, Kubuntu offers a user-friendly experience with the KDE desktop environment, suitable for those looking for a visually appealing and easy-to-use system.