UCLA Secure UNIX – an early secure UNIX OS based on security kernel.KSOS – secure OS design from Ford Aerospace.KVM/370 – security retro-fit of IBM VM/370.UCSD p-System ( First released version).Virtual Memory System (VMS) V1.0 ( Initial commercial release, October 25).Cambridge CAP computer – all operating system procedures written in ALGOL 68C, with some closely associated protected procedures in BCPL.Operating System/Virtual Storage 2 R2 (MVS).Hydra – capability-based, multiprocessing OS kernel.Multi-Programming Executive (MPE) – Hewlett-Packard.DOS-11 V09-20C ( Last stable release, June 1974).VME – implementation language S3 ( ALGOL 68).Эльбрус-1 ( Elbrus-1) – Soviet computer – created using high-level language uЭль-76 ( AL-76/ALGOL 68).PRIMOS (written in FORTRAN IV, that didn't have pointers, while later versions, around version 18, written in a version of PL/I, called PL/P).Virtual Machine/System Extensions Program Product (SEPP or VM/BSE).Virtual Machine/Basic System Extensions Program Product (BSEPP or VM/SE).Virtual Machine Facility/370 (VM/370), sometimes known as VM/CMS.Operating System/Virtual Storage 2 R1 (OS/VS2 SVS).Operating System/Virtual Storage 1 (OS/VS1).RSTS-11 2A-19 ( First released version PDP-11).Multics (MIT, GE, Bell Labs for the GE-645 and later the Honeywell 6180) ( opened for paying customers in October ).Unics (later Unix) ( AT&T, initially on DEC computers).TENEX ( Bolt, Beranek and Newman for DEC systems, later TOPS-20).THE multiprogramming system ( Eindhoven University of Technology) publication.WAITS ( SAIL, Stanford Artificial Intelligence Laboratory, time-sharing system for DEC PDP-6 and PDP-10, later TOPS-10).TSS/360 (IBM's Time-sharing System for the S/360-67, never officially released, canceled in 1969 and again in 1971).ORVYL (Stanford University's time-sharing system for the IBM S/360).ITS (MIT's Incompatible Timesharing System for the DEC PDP-6 and PDP-10).
Dartmouth Time Sharing System ( Dartmouth College's DTSS for GE computers).Berkeley Timesharing System (for Scientific Data Systems' SDS 940).