Release of OpenVMS

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

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Which happened first?

• Release of OpenVMS happened 3 years before Release of 86-DOS
• Release of OpenVMS happened 4 years before Release of MS-DOS
• Release of OpenVMS happened 4 years before Release of IBM PC DOS
• Release of OpenVMS happened 6 years before Release of UNIX System V
• Release of OpenVMS happened 8 years before Release of Windows 1.0

Timeline

1. Release of OpenVMS (this page)October 25, 1977
2. Release of 86-DOS1980
3. Release of IBM PC DOSAugust 1981
4. Release of MS-DOSAugust 12, 1981
5. Release of UNIX System V1983
6. Release of Windows 1.0November 20, 1985

Related

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• Release of Windows 7October 22, 2009
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• Release of Windows 98June 25, 1998
• Release of Windows PhoneNovember 8, 2010