SUSE Linux (/ˈsuːsə/ or /ˈsuːzə/;German: [ˈzuːzə]) is a computer operating system. It is built on top of the open source Linux kernel and is distributed with system and application software from other open source projects. SUSE Linux is of German origin, basically an acronym of “Software und System-Entwicklung” (software and systems development), and was mainly developed in Europe. The first version appeared in early 1994, making SUSE one of the oldest existing commercial distributions. It is known for its YaST configuration tool.
Novell bought the SUSE (then "SuSE") brands and trademarks in 2003. Novell, one of the founding members of the Open Invention Network, decided to make the community an important part of their development process by opening widely the distribution development to outside contributors in 2005, creating the openSUSE distribution and the openSUSE Project. Novell employed more than 500 developers working on SUSE in 2004. On 27 April 2011, Novell (and SUSE) were acquired by The Attachmate Group, which made SUSE an independent business unit. Later, in October 2014, the entire Attachmate Group, including SUSE, was acquired by the British firm Micro Focus International. SUSE continues to operate as an independent business unit.