OpenVMS, often referred to as just VMS, [8] is a multi-user, multiprocessing and virtual memory -based operating system. It is designed to support time-sharing, batch processing, transaction …

OpenVMS is a server operating system, originally developed by Digital Equipment Corporation (DEC) as VMS. It was enhanced by Compaq, HP (E), and is now licensed to VMS Software, …

OpenVMS (Open Virtual Memory System) is a secure, multi-user operating system developed by Digital Equipment Corporation for running on DEC VAX and Alpha servers. It's widely used in …

Jul 11, 2025 · OpenVMS is a multi-user, multitasking operating system that supports virtual memory. OpenVMS supports clustering (up to 96 nodes) that provides distributed processing, …

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What is OpenVMS? OpenVMS (VMS) is a server OS sold by VMS Software, Inc. (VSI). This operating system runs on VAX, Alpha, Integrity, and soon x86 systems.

VMS Software, Inc. (VSI) develops, sells and is currently porting OpenVMS (VMS) operating system to x86; offers support, training, software for VMS.

Looking for OpenVMS commands? OpenVMS documentation including VMS manuals for VSI OpenVMS and HP OpenVMS can be found here.

VSI OpenVMS V9.2-1 for x86-64 is now available and replaces V9.2 for supporting your efforts to migrate your applications to x86.

VMS Software, Inc. supports all OpenVMS (VMS) versions including HP VMS and VSI VMS, Alpha and Itanium OpenVMS. See the list of VSI versions here.