| spc | Microsoft Software Publisher Certificate |
| spc | SNES Soundtrack Data |
| spc | SVAL Spectrogram Data |
| spc | Thermo Scientific SPC File |
| spc | Zemax Spectrum Source Data |
| spcd | Zemax Spectrum Source |
| spcmd | Stereoscopic Player Commands Data |
| spcolor | Microsoft SharePoint Color Palette Data |
| spd | Form Z Suspended Rendering FIle |
| spd | SpecTRM Specification |
| spd | SPSD/M Database |
| spd | SPSS Custom Dialog Data |
| spd | SpyProof! Encrypted Disk Data |
| spd | WatchGuard MUVPN Security Policy Database |
| spd | Windows Server Security Policy Database |
| spda | Surveyor PDA Detector Data |
| spdata | Microsoft SharePoint Project Data |
| spdb | iGO Primo SpeedCam Database |
| spdb | Sticky Password Sync Database |
| spdc | SAS SPD Data Set |
| spdesignasax | Microsoft SharePoint Designer ASAX Data |
| spdesignasmx | Microsoft SharePoint Designer ASMX Data |
| spdesignbar | Microsoft SharePoint Designer Bar Data |
| spdesignbot | Microsoft SharePoint Designer Bottom Data |
| spdesigncss | Microsoft SharePoint Designer CSS Data |
| spdesignfile | Microsoft SharePoint Designer File Data |
| spdesignhtml | Microsoft SharePoint Designer HTML Data |
| spdesignjs | Microsoft SharePoint Designer JS Data |
| spdesignlist | Microsoft SharePoint Designer List Data |
| spdesignnav | Microsoft SharePoint Designer Navigation Data |
| spdesignresx | Microsoft SharePoint Designer RESX Data |
| spdesignshtm | Microsoft SharePoint Designer SHTML Data |
| spdesignskin | Microsoft SharePoint Designer Skin Data |
| spdesigntxt | Microsoft SharePoint Designer Text Data |
| spdesignweb | Microsoft SharePoint Designer WEB Data |
