| sr5 | SIR Database Journal Data |
| sr6 | SIR Alternate Index |
| sr7 | SAS Item Storage |
| sr8 | RECOIL Data |
| sra | Sequence Read Archive |
| src | AQUA Disulphide Distance Restraints Counts Data |
| src | Mozilla Firefox Custom Search Data |
| srd | Sage 50 Report Data |
| srd | Smart Reminder Database |
| srd | Summary Record Database |
| srec | Motorola S-record Data |
| srf | BrainVoyager QX Surface Data |
| srf | Lightwave 3D Surface Data |
| srf | myMP3PRO Skin Data |
| srf | Oracle Siebel Compiled Repository Data |
| srf | Smaart Spectrum Data |
| srf | Spike2 Result Views Data |
| srf | SurfSaver Data |
| srf | Terragen Surface Data |
| srfl | SurfLogger Log |
| srfmap | Terragen Surface Map Data |
| srg | Ketron Single Registration |
| srg | Microsoft PowerPoint Self-registration Data |
| srh | BMC Remedy AR System Server Saved Search |
| srl | ACwin Local Database |
| srl | ASwin Shared Database |
| srl | SmartWare Resource Library |
| srm | Kega Fusion Game RAM Data |
| srm | SNES Save State File |
| srn | Micro Focus Enterprise Server Screen |
