| Abbreviation | Definition |
|---|---|
| AOS | Ago Open Source |
| AOS | ALE Operating System |
| AOSA | Aspect Oriented Software Association |
| AOSC | Acme Open Source Community |
| AOSD | Aspect Oriented Software Development |
| AOSD | Aspect-Oriented Software Development |
| AOSE | Agent Oriented Software Engineering |
| AOSE | Agent-Oriented Software Engineering |
| AOSM | Aspect Oriented Software Maintainability |
| AOSM | Aspect oriented software modelling |
| AOSP | Android Open Source Project |
| AOT | Ahead-Of-Time |
| AOT | Application Object Template |
| AP | Advanced Programming |
| AP | Application Protocol |
| APAC | Automatic Programming Assignments Checker |
| APAR | Authorized Program Analysis Report (IBM) |
| APARS | Associate Planning And Review System |
| APC | Alternative PHP Cache |
| APD | Assertions and Printf Debugging (Library for C code) |