| Microwave Observatory of Subcanopy and Subsurface | Academic & Science |
| Map Overlay and Statistical System | Academic & Science |
| Mobile Oceanography Support System | Academic & Science |
| Midrange Operations System Services | Business |
| Make Our School Safe | Community |
| McCall Outdoor Science School | Community |
| Montana Outdoor Science School | Community |
| Macintosh Os (operating System) Startup Screen | Computer Hardware |
| MAC Operating System Startup | Computing |
| MIME (Multi-purpose Internet Mail Extensions) Object Security Services | Computing |
| Mike's Operating System Simulation | Computing |
| Moving Object Support System | Computing |
| Map Overlay Statistical System | Computing |
| Maintenance and Operator Subsystem | Computing |
| Multi-oscillator Synthesis System | Electronics |
| Mini One Stop Shop | General |
| Masala Oil Salt and Sugar | General |
| Mozilla Open Source Support | General |
| Modern Organic Sacred Skincare | General |
| Mordern Organic Sacred Skincare | General |
| Market Oriented Sector Selective | General |
| MIME Object Security Services | General |
| Morocco Oukaimeden Sky Survey | General |
| Mantras Oils Soulful Stones | General |
| Made Of Special Stuff | General |
| Mace Of the Shadowed Soul | General |
| Minimum Operative Security Standards | Governmental |
| Matrix Online Supplemental Storyline | Internet |
| Member(s) Of the Same Sex | Internet |
| Minimum Operating Security Standards | Military and Defence |
| Measure of Software Similarity | Military and Defence |
| Microsoft Office Sharepoint Server | Networking |
| Mechanized Operating System Setup | Softwares |
