Multics

was a mainframe time-sharing operating system begun in 1965 and used until 2000.

Operating system · by Bell Labs, General Electric, Massachusetts Institute of Technology · multicians.org

Open Multics in AirStack

What Multics’s own pages say

What it says it doeswas a mainframe time-sharing operating system begun in 1965 and used until 2000. multicians.org
Open sourceYes multicians.org
LicenseIt is available "for any purpose and without fee" provided that the copyright notice multicians.org

Each value is a quote AirStack found on the product’s own pages, read 2026-11-04. A missing field means AirStack has not found it on its pages.