| sai | Burrows-Wheeler Alignment Tool SAI Data |
| saj | Sage 50 Folder Data |
| sal | SORITEC Data |
| sal | WRAP Salinity Simulation Results Data |
| sam | PaleoMag ASCII Sample Data |
| sam07 | SAM 2007 Package |
| samp | Apache Drill Sample Data |
| sapssd | SAP GUI Data |
| sar | Sage Timeslips Backup Data |
| sar | Sibelius Arrange Style |
| sas7bacs | SAS Access Descriptor |
| sas7baud | SAS Audit Data |
| sas7bbak | SAS Backup |
| sas7bcat | SAS Catalog |
| sas7bdat | SAS Data Set |
| sas7bdmd | SAS Data Mining Database |
| sas7bfdb | SAS Consolidation Database |
| sas7bitm | SAS Item Storage |
| sas7bmdb | SAS Multi-dimensional Database |
| sas7bndx | SAS Index |
| sas7bvew | SAS Stat Studio Metadata |
| sas7bvew | SAS View |
| sasf | NASA Spacecraft Activity Sequence File |
| sat | Standard ACIS Text |
| sav | General Saved Data |
| sav | Parallels Desktop Saved State Image |
| sav | SPSS Data |
| savedsearch | Mac OS X Spotlight Saved Search |
| saver | Mac OS X Screensaver File |
| savf | IBM AS/400 Save File |
