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z/OS icon

z/OS

z/OS is a 64-bit operating system for IBM mainframes, introduced by IBM in October 2000. It derives from and is the successor to OS/390, which in turn followed a string of MVS versions.

z/OS screenshot 1

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  • Pay once
  • Proprietary

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  • Online
  • Self-Hosted
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z/OS information

  • Developed by

    Unknown

  • Licensing

    Proprietary and Commercial product.

  • Pricing

    One time purchase (perpetual license).

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  • Supported Languages

    • English
z/OS was added to AlternativeTo by OnlyHardOfficial on and this page was last updated .
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What is z/OS?

z/OS is a 64-bit operating system for IBM mainframes, introduced by IBM in October 2000.[2] It derives from and is the successor to OS/390, which in turn followed a string of MVS versions.[NB 2] Like OS/390, z/OS combines a number of formerly separate, related products, some of which are still optional. z/OS has the attributes of modern operating systems, but also retains much of the older functionality originated since the 1960s and still in regular use MORE INFO: https://en.wikipedia.org/wiki/Z/OS