| MP3
| MP3 Sound file
| [[FuturePlayer]], [[SymAmp]]|-| [[MTX]]| Keyboard MaTriX Layout file for apps like [[FutureTex]]| [[FutureTex]], [[FuturePlayerFutureOS]]|-
|-
| OBJ
| ROM
| Rom-File (16K)
| [[ROManager]], diff. (Pseudo-)/(EP)ROM Manager
|-
| [[Format:Advanced OCP Art Studio File Formats|SCR]]
| OCP Art Studio Screen
| [[FutureOS]], [[The OCP Art Studio]], [[SymSee]]
|-
| SID
| COM
| CP/M application
| CPvM (CP/M virtual machinefor SymbOS SymShell)
|-
| [[Format:DSK disk image file format|DSK]]
| FNT
| Font file
| Control Panel, [[Font Editor]]
|-
| GOL
| graphic
| [[SymSee]]
|-
| SDS
| System sound scheme
| [[Sound Daemon]]
|-
| SPL
|-
| SWM, SWX
| wave music/effect collection(OPL4)
| [[Sound Daemon]], client applications
|-