SUSE Linux (pronounced /ˈsuːsə/, German: [ˈzuːzə]) is a computer operating system. It is built on top of the Linux kernel and is distributed with system and application software from various projects. SUSE Linux is of German origin and mainly developed in Europe. The first version of this distribution appeared in early 1994, making SUSE the oldest existing commercial distribution. It is known for its YaST configuration tool. The SuSE brands and trademarks have been owned by Novell since 2003, when the company bought SUSE.
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 Project.
Novell employed over 500 developers working on SUSE in 2004.