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SunOS was a UNIX based OS derived from BSD. Initially released in 1982, it was the standard OS on Sun Machines at that time. Platforms supported by this OS were the Motorola 68000, the Sun 386i, and the SPARC. SunOS machines are still actually in use today powering dams and bread factories.


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BlueBird SuperDOS is a proprietary multi-tasking multi-user system built to run business applications simultaneously over dumb terminals, replacing expensive mainframe/minicomputers with a single commodity PC. Business Computers systems, and then IBM PC systems. It grew to support protected mode on 386/486 systems. Although it uses MS/PC-DOS to install, "Protected Mode SuperDOS is a freestanding operating system that is not dependent on either DOS or the ROM BIOS.". Most applications for it are written in BlueBird SuperDOS Business Basic. and moving-and-storage companies that needed workstations at many points for data entry, but did not want to put a powerful and expensive computer on every desk. Office, Manufacturing, Auto Rental, Van and Storage, Wholesale Distribution, and Word Processing. Most of these were ported from Data General compatible Business Basic software. multi user basic-oriented product was Thoroughbred/OS, and much later Citrix Multiuser attempted to fill a similar role.


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SY-TOS is a powerful backup program for DOS, and other operating systems. It was commonly customized for and bundled with OEM backup hardware. SY-TOS Plus was the first retail standalone version.


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Originally released in 1983 by Science Management Corporation and later under Concept Omega Corporation, Thoroughbred/OS is a unique BASIC oriented multi-tasking multi-user operating system for the IBM XT and compatible systems. serial terminals. It can power up to 16 terminals with the right serial expansion cards. All of the applications are written in BASIC, and the shell itself is an interactive BASIC interpreter.


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Timeworks DOS Office, from Timeworks, Inc., is an office suite consisting of the Timeworks Word Writer PC word processor, the Timeworks SwftCalc spreadsheet, and the Timeworks Data Manager desktop database.


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Toolworks DOS Tutor is an extensive DOS tutorial with detailed descriptions about the operation of common IBM PC compatibles, peripheral hardware, and the operation of DOS.


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Wendin DOS is a clone of MS/PC-DOS that runs on 8088 machines, but offers multitasking on 386+.


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This is a generic command line backup program provided by Texas Instruments for TI Professional Computers equipped with hard drives.


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WindowDOS is a pop-up TSR utility that enables DOS users to run DOS commands and perform file management while they are still running other applications. It can search for files, password lock a system, view files, and send special printer control codes to change printer text modes.


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WinSong Composer, first released as Opus Composer in 1987 by Maranatha Systems, Inc, is a music notation program that supports Microsoft Windows 1.x and 2.x. It can also play back music through a music driver program, that apparently in the full version supports MIDI interface devices. which plays back music on the PC Speaker.


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Xandros Linux is a proprietary variant of Linux that sprung up out of the proprietary Corel Linux after they sold off their Linux business.


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This is the diagnostics and GW-Basic disk bundled with Xerox 6060 IBM PC clones. these disks.


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The Zenith Programmer's Utility Pack for MS-DOS contains source code and compiler utilities needed for building an MS-DOS BIOS (IO.SYS file) for use with the Zenith Z-100 (not IBM hardware compatible), the Zenith Z-100 PC (IBM hardware compatible), and the Zenith Z-100 PC running in Z-100 compatibility mode.


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These are a set of diagnostic programs for Heath/Zenith Z-200 computers.