| Perspective | OS Type | Description | Example |
|---|---|---|---|
| User Point of View | Single-User | One user at a time | Windows 11 |
| Multi-User | Many users simultaneously | UNIX | |
| CLI | Command-based interface | MS-DOS | |
| GUI | Icon/menu-based interface | macOS | |
| Features Point of View | Batch | Executes jobs in batches | IBM OS |
| Time-Sharing | Divides CPU time among users | Linux | |
| Distributed | Manages multiple systems as one | Amoeba | |
| Real-Time | Responds immediately to inputs | VxWorks | |
| Network | Manages network resources | Windows Server | |
| Mobile | For handheld devices | Android |
