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KeyKOS is a microkernel, developed for S/370 computers. Besides mounting tapes and tending to the printers, KeyKOS is meant for unattended operation.

KeyKOS' development started in the 1970's by Tymshare.

# External Links
<!-- I'm getting tired. Usually I'd be able to write a few pages and then some, but I guess I was up too late yesterday & too early today.
     Going to finish up doing research on KeyKOS and write the rest of this page tomorrow morning. -->
[KeyKOS](https://web.archive.org/web/20110621235952/https://www.cis.upenn.edu/~KeyKOS/KeyKOS.html) on the Wayback Machine.