| Extension | File Description |
| .S9V | Uncommon Files |
| .S9W | Uncommon Files |
| .S9X | Uncommon Files |
| .S9Y | Uncommon Files |
| .S9Z | Uncommon Files |
| .sa | Uncommon Files |
| .SA0 | Uncommon Files |
| .SA2 | Uncommon Files |
| .SA2B | Uncommon Files |
| .SA3 | Uncommon Files |
| .SA4 | Uncommon Files |
| .SA5 | Uncommon Files |
| .SA6 | Uncommon Files |
| .SA7 | Uncommon Files |
| .SA8 | Uncommon Files |
| .SAA | Uncommon Files |
| .SAB2 | Uncommon Files |
| .SAC | Uncommon Files |
| .SACRED2SAV | Uncommon Files |
| .SAE | Uncommon Files |
| .SAFE | Uncommon Files |
| .SAG | Uncommon Files |
| .SAGE | Uncommon Files |
| .SAGEM | Uncommon Files |
| .SAI | Uncommon Files |
| .SAIF | Uncommon Files |
| .SAIL | Uncommon Files |
| .SAJ | Uncommon Files |
| .SAK | Uncommon Files |
| .SAL | Uncommon Files |
| .SALE | Uncommon Files |
| .SAMPLE | Uncommon Files |
| .SAMPLER | Uncommon Files |
| .SAMPLER294 | Uncommon Files |
| .SAMPLES | Uncommon Files |
| .SAN | Uncommon Files |
| .SANDMAN | Uncommon Files |
| .SANE | Uncommon Files |
| .SANFRANCI | Uncommon Files |
| .SANKEY | Uncommon Files |
| .SANTEM | Uncommon Files |
| .SAO | Uncommon Files |
| .SAQ | Uncommon Files |
| .SAQ?? | Uncommon Files |
| .SAS7BACS | Uncommon Files |
| .SAS7BAUD | Uncommon Files |
| .SAS7BBAK | Uncommon Files |
| .SAS7BCAT | Uncommon Files |
| .SAS7BDAT | Uncommon Files |
| .SAS7BDMD | Uncommon Files |
| .SAS7BFDB | Uncommon Files |
| .SAS7BITM | Uncommon Files |
| .SAS7BMDB | Uncommon Files |
| .SAS7BNDX | Uncommon Files |
| .SAS7BODS | Uncommon Files |
| .SAS7BPGM | Uncommon Files |
| .SAS7BPUT | Uncommon Files |
| .SAS7BUTL | Uncommon Files |
| .SAS7BVEW | Uncommon Files |
| .SAS7SACS | Uncommon Files |
| .SAS7SAUD | Uncommon Files |
| .SAS7SBAK | Uncommon Files |
| .SAS7SCAT | Uncommon Files |
| .SAS7SDAT | Uncommon Files |
| .SAS7SDMD | Uncommon Files |
| .SAS7SFDB | Uncommon Files |
| .SAS7SITM | Uncommon Files |
| .SAS7SMDB | Uncommon Files |
| .SAS7SNDX | Uncommon Files |
| .SAS7SODS | Uncommon Files |
| .SAS7SPGM | Uncommon Files |
| .SAS7SPUT | Uncommon Files |
| .SAS7SUTL | Uncommon Files |
| .SAS7SVEW | Uncommon Files |
| .SATELLITE | Uncommon Files |
| Extension | File Description |
| .SATURN | Uncommon Files |
| .SAU | Uncommon Files |
| .SAUCE | Uncommon Files |
| .SAUCER | Uncommon Files |
| .SAUT | Uncommon Files |
| .SAVAGE | Uncommon Files |
| .SAVEDGAME | Uncommon Files |
| .SAVGAO | Uncommon Files |
| .SAVINGS | Uncommon Files |
| .SAW | Uncommon Files |
| .SAX | Uncommon Files |
| .SAY | Uncommon Files |
| .SAZ | Uncommon Files |
| .SB0 | Uncommon Files |
| .SB1 | Uncommon Files |
| .SB2 | Uncommon Files |
| .SB3 | Uncommon Files |
| .SB4 | Uncommon Files |
| .SB5 | Uncommon Files |
| .SB6 | Uncommon Files |
| .SB7 | Uncommon Files |
| .SB8 | Uncommon Files |
| .SB9 | Uncommon Files |
| .SBA | Uncommon Files |
| .SBAK | Uncommon Files |
| .SBE | Uncommon Files |
| .SBG | Uncommon Files |
| .SBGF | Uncommon Files |
| .SBH | Uncommon Files |
| .SBJ | Uncommon Files |
| .SBL | Uncommon Files |
| .SBM | Uncommon Files |
| .SBO | Uncommon Files |
| .SBPF | Uncommon Files |
| .SBQ | Uncommon Files |
| .SBQ?? | Uncommon Files |
| .SBSONG | Uncommon Files |
| .SBTF | Uncommon Files |
| .SBU | Uncommon Files |
| .SBV | Uncommon Files |
| .SBY | Uncommon Files |
| .SBZ | Uncommon Files |
| .SB_ | Uncommon Files |
| .SC$ | Uncommon Files |
| .SC0 | Uncommon Files |
| .SC1 | Uncommon Files |
| .SC4PATH | Uncommon Files |
| .SC5 | Uncommon Files |
| .SC68 | Uncommon Files |
| .SC7 | Uncommon Files |
| .SC8 | Uncommon Files |
| .SC9 | Uncommon Files |
| .SCALA | Uncommon Files |
| .SCAN | Uncommon Files |
| .SCANNER | Uncommon Files |
| .SCARS | Uncommon Files |
| .SCE | Uncommon Files |
| .SCE2 | Uncommon Files |
| .SCENARIO | Uncommon Files |
| .SCHDOC | Uncommon Files |
| .SCHED | Uncommon Files |
| .SCHEDULER | Uncommon Files |
| .SCJ | Uncommon Files |
| .SCK | Uncommon Files |
| .SCL | Uncommon Files |
| .SCODL | Uncommon Files |
| .SCORE | Uncommon Files |
| .SCOREFONT | Uncommon Files |
| .SCORERS | Uncommon Files |
| .SCORES | Uncommon Files |
| .SCOTT | Uncommon Files |
| .SCPR | Uncommon Files |
| .SCQ | Uncommon Files |
| .SCQ?? | Uncommon Files |
| .SCR1 | Uncommon Files |
