| .spl |
sPlan Schematic Diagram File |
| .spb |
Flight Simulator Mission File |
| .spj |
PhotoStage Slideshow Project |
| .searchconnector-ms |
Windows Search Connector File |
| .sed |
IExpress Self Extraction Directive File |
| .sft |
Microsoft App-V Sequencer File |
| .sqlproj |
Visual Studio SQL Server Project |
| .sdl |
Scene Description Language File |
| .settingcontent-ms |
Windows Settings File |
| .shb |
Windows Document Shortcut |
| .shg |
Segmented Hyper-Graphic |
| .svc |
WCF Web Service File |
| .sfcache |
ReadyBoost Cache File |
| .sst |
Serialized Certificate Store File |
| .swm |
Split Windows Imaging Format File |
| .sdi |
Windows System Deployment Image |
| .stf |
Exchange 2000 Server Temporary File |
| .sbb |
Office Accounting Company Backup File |
| .sylk |
Microsoft Symbolic Link File |
| .sbr |
Visual Studio Source Browser Intermediate File |
| .solitairesave-ms |
Microsoft Solitaire Saved Game |
| .spidersolitairesave-ms |
Microsoft Spider Solitaire Saved Game |
| .sy_ |
Compressed SYS File |
| .sp3 |
NGS SP3 File |