| Abbreviation | Definition |
|---|---|
| MOO | MacIntosh OS (Operating System) Optimizer |
| MOO | Mud Object Oriented |
| MOO | Multiuser Object Oriented |
| MOOD | Metrics for Object-Oriented Developments |
| MOOL | Microsoft Office Outlook Live |
| MOOM | My Oval Office Microsoft |
| MOOS | Mission Oriented Operating Suite |
| MOP | Meta Object Protocol |
| MOPM | Microsoft Office Picture Manager |
| MOPPS | Microsoft Office Project Portfolio Server |
| MOPS | My Own Portal Solution |
| MOS | Mambo Open Source |
| MOS | Mit Out Sound |
| MOSA | Microsoft Online Service Agreement |
| MOSI | Microprocessor Operating System Interface |
| MOSM | Microsoft Office Specialist Master |
| MOSP | Mail Order Software Plus |
| MOSP | Microsoft Online Subscription Program Microsoft Online Subscription |
| MOSP | Microsoft Operating System Product |
| MOSP | Microware Outsourcing Service Package |