TSS (operating system)

The IBM Time Sharing System, TSS/360, is a discontinued early time-sharing operating system designed exclusively for the Model 67, a special model of the System/360 line of mainframes. Made available on a trial basis to a limited set of customers in 1967, it was never officially released as a supported IBM product, though it pioneered features that later appeared in more popular systems such as MVS; it was later migrated to System/370 and 303x hardware as TSS/370, whose Resident Supervisor was used as the basis for a port of Unix to the IBM mainframe, and it also inspired the later TSS/8 operating system. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/