| Extension | File Description |
| .SNAPFIREPR | Uncommon Files |
| .SNARE2 | Uncommon Files |
| .SNB | Uncommon Files |
| .SNC | Uncommon Files |
| .SND2 | Uncommon Files |
| .SNDJ | Uncommon Files |
| .SNDR | Uncommon Files |
| .SNDS | Uncommon Files |
| .SNDSAO | Uncommon Files |
| .SNDT | Uncommon Files |
| .SNE | Uncommon Files |
| .SNES | Uncommon Files |
| .SNF | Uncommon Files |
| .SNH | Uncommon Files |
| .SNI | Uncommon Files |
| .SNIFFER | Uncommon Files |
| .SNIP | Uncommon Files |
| .SNJ | Uncommon Files |
| .SNL | Uncommon Files |
| .SNM?? | Uncommon Files |
| .SNN | Uncommon Files |
| .SNO | Uncommon Files |
| .SNOOP | Uncommon Files |
| .SNOW | Uncommon Files |
| .SNOWFLKS | Uncommon Files |
| .SNQ | Uncommon Files |
| .SNR | Uncommon Files |
| .SNS | Uncommon Files |
| .SNU | Uncommon Files |
| .SNV | Uncommon Files |
| .SNW | Uncommon Files |
| .SNX | Uncommon Files |
| .SNX?? | Uncommon Files |
| .SNY | Uncommon Files |
| .SNYDERSPEE | Uncommon Files |
| .SNZ | Uncommon Files |
| .SN_ | Uncommon Files |
| .SO0 | Uncommon Files |
| .SO1 | Uncommon Files |
| .SO2 | Uncommon Files |
| .SO3 | Uncommon Files |
| .SO4 | Uncommon Files |
| .SO5 | Uncommon Files |
| .SO6 | Uncommon Files |
| .SO7 | Uncommon Files |
| .SO8 | Uncommon Files |
| .SO9 | Uncommon Files |
| .SOA | Uncommon Files |
| .SOC | Uncommon Files |
| .SOD | Uncommon Files |
| .SOE | Uncommon Files |
| .SOF | Uncommon Files |
| .SOFTDISK | Uncommon Files |
| .SOFTWARE | Uncommon Files |
| .SOG | Uncommon Files |
| .SOH | Uncommon Files |
| .SOI | Uncommon Files |
| .SOJ | Uncommon Files |
| .SOK | Uncommon Files |
| .SOLVE | Uncommon Files |
| .SOM | Uncommon Files |
| .SON | Uncommon Files |
| .SONATA | Uncommon Files |
| .SONG | Uncommon Files |
| .SONG1 | Uncommon Files |
| .SONG3 | Uncommon Files |
| .SONG4 | Uncommon Files |
| .SONG5 | Uncommon Files |
| .SONGWRITIN | Uncommon Files |
| .SOO | Uncommon Files |
| .SOP | Uncommon Files |
| .SOQ | Uncommon Files |
| .SOQ?? | Uncommon Files |
| .SOR | Uncommon Files |
| .SORT | Uncommon Files |
| Extension | File Description |
| .SORT1 | Uncommon Files |
| .SORT2 | Uncommon Files |
| .SORTER | Uncommon Files |
| .SOS | Uncommon Files |
| .SOT | Uncommon Files |
| .SOUND | Uncommon Files |
| .SOUNDCOM | Uncommon Files |
| .SOUNDEX | Uncommon Files |
| .SOUNDSMITH | Uncommon Files |
| .SOUP | Uncommon Files |
| .SOURCE | Uncommon Files |
| .SOURCE2 | Uncommon Files |
| .SOURCE3 | Uncommon Files |
| .SOURCES | Uncommon Files |
| .SOV | Uncommon Files |
| .SOX | Uncommon Files |
| .SOY | Uncommon Files |
| .SOZ | Uncommon Files |
| .SO_ | Uncommon Files |
| .SP# | Uncommon Files |
| .SP0 | Uncommon Files |
| .SP1 | Uncommon Files |
| .SP3 | Uncommon Files |
| .SP4 | Uncommon Files |
| .SP5 | Uncommon Files |
| .SP6 | Uncommon Files |
| .SP7 | Uncommon Files |
| .SP8 | Uncommon Files |
| .SP9 | Uncommon Files |
| .SPACE | Uncommon Files |
| .SPACE-HEAD | Uncommon Files |
| .SPACE1 | Uncommon Files |
| .SPACECHECK | Uncommon Files |
| .SPACEDEBRI | Uncommon Files |
| .SPACEINDEN | Uncommon Files |
| .SPACEINV | Uncommon Files |
| .SPACELOVE | Uncommon Files |
| .SPACEREVOL | Uncommon Files |
| .SPACEWALK | Uncommon Files |
| .SPADE | Uncommon Files |
| .SPADES | Uncommon Files |
| .SPAM | Uncommon Files |
| .SPAR | Uncommon Files |
| .SPARSE | Uncommon Files |
| .SPDESIGNAS | Uncommon Files |
| .SPDESIGNAS | Uncommon Files |
| .SPDESIGNBO | Uncommon Files |
| .SPDESIGNCO | Uncommon Files |
| .SPDESIGNCS | Uncommon Files |
| .SPDESIGNDO | Uncommon Files |
| .SPDESIGNED | Uncommon Files |
| .SPDESIGNHO | Uncommon Files |
| .SPDESIGNHO | Uncommon Files |
| .SPDESIGNHT | Uncommon Files |
| .SPDESIGNHT | Uncommon Files |
| .SPDESIGNJS | Uncommon Files |
| .SPDESIGNLI | Uncommon Files |
| .SPDESIGNLI | Uncommon Files |
| .SPDESIGNLI | Uncommon Files |
| .SPDESIGNMA | Uncommon Files |
| .SPDESIGNNA | Uncommon Files |
| .SPDESIGNNO | Uncommon Files |
| .SPDESIGNOP | Uncommon Files |
| .SPDESIGNPI | Uncommon Files |
| .SPDESIGNRE | Uncommon Files |
| .SPDESIGNSI | Uncommon Files |
| .SPDESIGNSK | Uncommon Files |
| .SPDESIGNSU | Uncommon Files |
| .SPDESIGNTH | Uncommon Files |
| .SPDESIGNTX | Uncommon Files |
| .SPDESIGNUN | Uncommon Files |
| .SPDESIGNWE | Uncommon Files |
| .SPDESIGNWF | Uncommon Files |
| .SPDESIGNXM | Uncommon Files |
| .SPDESIGNXO | Uncommon Files |
