Bell Labs Unices

The original Unix operating system from Bell Labs, developed by Ken Thompson and Dennis Ritchie

early commercial version of the Unix operating system by AT&T

7th Edition of Research Unix alias UNIX Time-Sharing System

6th Edition of Research Unix alias UNIX Time-Sharing System

The '''Programmer's Workbench (PWB/UNIX''') was an early, now discontinued, version of the Unix operating system that had been created in the Bell Labs Computer Science Research Group of AT&T. Its stated goal was to provide a time-sharing working environment for large groups of programmers, writing software for larger batch processing computers.

UNIX/32V is an early version of the Unix operating system from Bell Laboratories, released in June 1979. 32V was a direct port of the Seventh Edition Unix to the DEC VAX architecture.