| s1e | Sealed Excel Worksheet |
| s1w | Sealed Word Document |
| s3d | Shape 3D v8 Document |
| s3dx | Shape 3D X Document |
| s3g | MakerBot S3G Document |
| sadl | Semantic Application Design Language Document |
| safetext | SafeText |
| sam | Ami Pro Document |
| saveddeck | Nokia Saved Web Page |
| sb1 | MemoryMixer Album |
| sbk | Scrapbook Factory Deluxe Scrapbook |
| sbml | Systems Biology Markup Language Document |
| sbp | Autodesk Sketchbook Express Image |
| sbpf | Small Business Publisher Document |
| sc2 | Microsoft Schedule Plus Interchange |
| scd | Microsoft Schedule Plus Document |
| scdoc | SpaceClaim Document |
| sch | KiCad Schematic Document |
| sch | Microsoft Schedule Plus File |
| sch | EAGLE Schematic File |
| scld | ScoreCleaner Song |
| scn | Caligari TrueSpace Scene |
| scne | Infini-D Scene |
| scriv | Scrivener Document |
| scrivx | Scrivener XML Document |
| scsv | Sealed CSV Document |
| scv | ScanVec CASmate Sign |
| scw | Movie Magic Screenwriter Document |
| sda | StarOffice Draw Template |
| sdb | OpenOffice Base Database |
