Academic Operating System
| Developer | IBM |
|---|---|
| Written in | C |
| OS family | 4.3BSD Unix |
| Working state | Historic |
| Latest release | AOS43 / December 22, 1988 |
| Marketing target | Academic institutions |
| Platforms | ROMP |
Academic Operating System (AOS) was IBM's version of 4.3BSD Unix for the IBM RT. It was offered to academic institutions as an alternative to AIX, the usual RT operating system.
AOS had a few extra features, compared to standard 4.3BSD, notably , and an almost ANSI C-compliant C compiler.
A later version of AOS existed that was derived from 4.3BSD-Reno, but it never was widely distributed.
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