| .sdef |
AppleScript Dictionary Document |
| .ssc |
StepMania Song File |
| .scala |
Scala Source Code File |
| .sol |
Solidity Script |
| .sv |
SystemVerilog Source Code File |
| .smf |
StarMath Formula File |
| .sup |
Super Project Definition File |
| .set |
Settings File |
| .so |
Shared object files |
| .s |
Source Code File |
| .snippet |
Visual Studio IntelliSense Code Snippet |
| .sc |
Space Engine Script |
| .sud |
Super Project Analyzer File |
| .s19 |
Motorola S19 File Record |
| .sas |
SAS Program File |
| .suo |
Visual Studio Solution User Options File |
| .swd |
Flash Debug File |
| .spt |
ESPL Programming File |
| .swc |
Flex Components Archive |
| .sma |
AMX Mod Plugin Source File |
| .sb |
Scratch Project File |
| .svn-base |
Subversion Base File |
| .ssi |
Adobe Dreamweaver Server Side Include File |
| .scc |
SourceSafe Source Code Control File |