Debian is a free, open-source operating system based on the Linux kernel and widely respected for its stability, security, and versatility. First released in 1993, Debian has become one of the most influential distributions in the Linux ecosystem, serving as the foundation for many popular derivatives such as Ubuntu, Kali Linux, and Raspbian. It is developed collaboratively by thousands of volunteers around the world under the Debian Project, which adheres to strict principles of software freedom outlined in the Debian Free Software Guidelines (DFSG).
Debian’s strength lies in its reliability and extensive software repository, which includes over 50,000 packages accessible through the Advanced Package Tool (APT). It supports multiple hardware architectures, from x86 and ARM to RISC-V, and offers three main branches, Stable, Testing, and Unstable, allowing users to balance stability against access to newer software.
Designed for servers, desktops, and embedded systems alike, Debian is favored by system administrators and developers who value long-term support, consistent performance, and strong community governance. Its emphasis on security updates, transparency, and open collaboration makes Debian a cornerstone of the Linux world and a trusted choice for mission-critical environments.