Proper noun
English Wikipedia has an article on:MulticsWikipedia
Multics
(computing) An influential early time-sharing operating system.
One of the obvious things that went wrong with Multics as a commercial success was just that it was sort of over-engineered in a sense. There was just too much in it. Dennis Ritchie
Those who don't understand Unix are condemned to reinvent Multics in a browser. Theo de Raadt
ARPANET allowed different computers to be connected to allow e-mails to be relayed from computer to computer, with the first ARPANET e-mail being sent in 1971. citation Multics also pioneered instant messaging between computer users in the mid-1970s. Source: Internet
After Honeywell stopped supporting Multics, users migrated to other systems, including Unix. Source: Internet
But the internal design philosophy was quite different, focusing on keeping the system small and simple, and so correcting some deficiencies of Multics because of its high resource demands on the limited computer hardware of the time. Source: Internet
Corbató and the other designers of the Multics operating system envisioned a computer facility operating “like a power company or water company”. Source: Internet