Multiuser DOS

Last Updated on: 8th November 2023, 07:40 pm

Web site: (not active)
Origin: USA
Category: Others
Desktop environment: CLI
Architecture: x86, Motorola 86000
Based on: Concurrent
Wikipedia: Multiuser DOS
Media: Install
The last version | Released: 7.22 R18 | April 21, 2005

Multiuser DOS – a real-time multi-user multi-tasking operating system for IBM PC-compatible microcomputers.

An evolution of the older Concurrent CP/M-86, Concurrent DOS and Concurrent DOS 386 operating systems, it was originally developed by Digital Research and acquired and further developed by Novell in 1991.

Multitasking and multiuser operation under DOS for the first time – this is made possible by Digital Research GmbH, Munich, with the new “DR-Multiuser-DOS” operating system. The company is thus opposing the quasi-monopolist Microsoft, which does not have this Unix alternative in its product range.

The software veteran is slowly getting a better hand than Microsoft. When the CP/M era came to an end, the people around Bill Gates pushed the operating system market leader at the time to the sidelines with their MS-DOS. With version 5.0 of DR-DOS and with DR-Multiuser-DOS one wants to tie in with the past, says Ludwig Klüh, Marketing Communications Manager at Digital Research.

Microsoft is thus in the line of fire from several sides. On the one hand analysts are predicting difficulties with IBM, on the other hand the software company is being investigated in the USA because of unfair monopolization practices. Now Digital Research comes out with new DOS variants and is increasingly opposed to the market leader. Version 5.0 of DR-DOS offers more advantages than the Microsoft variant in the area of ​​memory management. With DR-Multiuser-DOS, 64 users can access up to eight applications developed under DOS 1.x, 2.x or 3.x. DOS now has capabilities previously attributed to Unix.

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