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A number of high performance operating systems are now available for small computers on different hardware platforms. These operating systems offer many advanced features formerly reserved for their workstation and minicomputer counterparts. This article surveys the most widely used of such operating systems, namely OS/2, Windows NT, Linux and Macintosh System 7.5. It provides an account on the history, design objectives and evolution of these operating systems and discusses their key features, design concepts and implementation issues. An assessment and comparison of features, and capabilities is also provided. The assessment and comparison is based primarily on key features, such as memory management, multitasking capabilities, file system architecture, I/O support (such as asynchronous I/O, multimedia capabilities, plug and play devices, and on-demand load drivers), and networking capabilities (e.g., support for widely used protocols such as TCP/IP, SLIP/PPP, NetBIOS, NSF mounting, etc.).

A framework for the assessment of operating systems for small computers