OpenSuSE (formerly known as SuSE Professional) is the "free" branch of the SuSE distribution family. OpenSuSE is not binary compatible to its bigger brother "SLES".
openSUSE is a general purpose operating system built on top of the Linux kernel, developed by the community-supported openSUSE Project and sponsored by SUSE.
After Novell acquired SUSE Linux in January 2004, Novell decided to release the SUSE Linux Professional product as a 100% open source project.
In openSUSE the openSUSE Project community, sponsored by SUSE, develops and maintains SUSE Linux distributions components.openSUSE is the successor to "SuSE Linux Professional".
Like most Linux distributions, openSUSE includes both a default graphical user interface (GUI) and a command line interface option. During installation, the user may choose among KDE SC, GNOME, LXDE and Xfce GUIs. openSUSE supports thousands of software packages across the full range of Free software / open source development.
openSUSE is fully and freely available for immediate download, and is also sold in retail box to the general public.
It comes in several editions for the x86 and x86-64 architectures.