Caldera OpenLinux is a defunct Linux distribution produced by Caldera, Inc. (and its successors Caldera Systems and Caldera International) that existed from 1997 to 2002. Based on the German LST Power Linux distribution, OpenLinux was an early high-end "business-oriented" distribution that included features it developed, such as an easy-to-use, graphical installer and graphical and web-based system administration tools, as well as features from bundled proprietary software. In its era, Caldera OpenLinux was one of the four major commercial Linux distributions, the others being Red Hat Linux, Turbolinux, and SuSE Linux.