Last Updated on: 23rd August 2023, 01:31 pm

Web site: (not active)
Origin: Russia (Soviet Union)
Category: Server
Desktop environment: CLI
Architecture: Motorola 68020, PDP-11, CM 1700, XT Clones
Based on: BSD
Wikipedia: DEMOS
Media: Install
The last version | Released: 3.0 ? | May 1983 ?

DEMOS / Демос (Dialogovaya Edinaya Mobilnaya Operatsionnaya Sistema / Диалоговая Единая Мобильная Операционная Система) – a Soviet version of Unix that included portions of AT&T Unix, portions from BSD, and some parts translated into Russian, and other utilities written in Russian.

The system development been started by Kurchatov Institute of Atomic Energy in 1982, and later development was doing with cooperation of DEMOS Co-operative.

It was developed for:
– SM-4 (a PDP-11/40 clone)
– SM-1600

It was ported to:
– Elektronika-1082
– clones of VAX-11(SM-1700)
– Elektronika-85 (a clone of DEC Professional)
– Motorola 68020-based microcomputers

The project been closed in 1991.

The screenshot source:; author: Neozeed; license: GNU Free Documentation License 1.2.

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