developed jointly by IBM and Lockheed Aircraft in Marietta, Georgia in 1965.

The system influenced a number of other timesharing systems including MCGILL-RAX from McGill University,[2] McGill's MUSIC,[3] and Reactive Terminal Service (RTS) from ITT Data Services.

[3] RAX was available from IBM as program number 360A-CX-17X, and runs on System/360 Model 30 and above.

[note 1] In a minimal system with 64 KB memory, user programs can be up to 32 KB, with larger programs allowed on larger systems.

[5] In 1968 RAX was used by the United States Department of Agriculture for their Washington Data Processing Center.