SINIX (later renamed to Reliant UNIX) was a variant of the Unix operating system from Siemens Nixdorf Informationssysteme.
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Following X/Open's acceptance that its requirements for the use of the UNIX trademark were met, version 5.44 and subsequent releases were published as Reliant UNIX by Fujitsu Siemens Computers.
VM2000 - EBCDIC-based hypervisor for S/390-compatible platform, capable of running multiple BS2000 and SINIX virtual machines