Early history
Here are operating systems prior to 1970. Naturally, these are all predecessors of UNIX:
- 1961: Compatible Time-Sharing System (CTSS), an early timesharing system from MIT
- first presented in 1962
- see 1965 Manual
- 1963: A Solution to Computer Bottlenecks
- by Fernando Corbató
- badly needs restoration
- mono audio
- backup from MIT vault
- 1967: Incompatible Timesharing System (ITS)
- 1969: Multics
- Ken and Dennis were two of several Multics programmers who later worked on UNIX