|''Extension''||''Explanations''||''Programs that use this extenstion''
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|$$$||Temporary Amsdos file||[[Amsdosamsdos]]
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|128||Soundtrakker 128KB music file]]||[[Soundtrakker]]
|HED||Header/Icon definition for FutureOS||[[FutureOS]]
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|HGB||FutureOS Background Picture||[[FutureOS]]
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|HLP||Help file||
|SKS||STarKos Module||
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|SMC||Executable C Program for FutureOS||[[FutureOS]]
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|SNA||Emulator Snapshot 64/128KB||
|ST2||Compilated Soundtrakker 128 Module||
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|SUB||Submit/Batch file (CP/M)||[[CP/M]]
|-
|TAP||Emulator tape image||