Editing List of operating systems (section)

===International Computers Limited===
* [[J (operating system)|J]] and [[MultiJob]] – for the System 4 series mainframes
* [[GEORGE (operating system)|GEORGE]] 2/3/4 GEneral ORGanisational Environment – used by [[International Computers Limited|ICL]] [[ICT 1900 series|1900 series]] mainframes
* [[Edinburgh Multiple Access System]] (EMAS) for the [[ICL System 4/75]], from the [[University of Edinburgh]], later ported to other systems.
* [[Executive (operating system)|Executive]] – used on the 1900 and 290x range of minicomputers. A modified version of Executive was also used as part of GEORGE 3 and 4.
* [[TME (operating system)|TME]] – used on the ME29 minicomputer
* [[ICL VME]] – including early variants VME/B and VME/2900, appearing on the [[ICL 2900 Series]] and Series 39 mainframes, implemented in [[S3 programming language|S3]]
* [[VME/K]] – on early smaller 2900s