EXEC 8 (or: EXEC VIII) – a UNIVAC operating system developed for the UNIVAC 1108 in 1964. It combined the best features of the earlier operating systems, EXEC I and EXEC II, which were used on the UNIVAC 1107. archiveos.org/exec-8/ #operatingsystem #univac

OS 2200 - an operating system for Unisys mainframes. It runs on systems such as the ClearPath Server OS2200 series (known in the U.S. as the ClearPath Dorado family) of Unisys mainframe computers. archiveos.org/os-2200/ #operatingsystem #univac