| 1. | .sm | Maillist (SoftSpoken Mailer) ◊ Script (ScriptMaker) ◊ Smalltalk language source code file ◊ Text document (Samna Word) |
| 2. | .sm3 | Symbol file (DataCAD) |
| 3. | .smd | Video game console ROM emulator file |
| 4. | .smf | Fax (SMARTFAX) |
| 5. | .smi | Daylight SMILES ◊ Self-mounting Disk Copy compressed image (Macintosh). Similar to an .img file, but it does not require the use of Disk Copy. When the file is downloaded, a disk image appears o… 0.3 KB |
| 6. | .smk | Smacker video (RAD Video Tools) |
| 7. | .smm | Macro (Ami Pro) |
| 8. | .smn | Font (ParaGraph's WorkScript format) |
| 9. | .smp | Sound (Samplevision format) |
| 10. | .sms | Emulator ROM image file (8-bit Sega Master System) |
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