| File Extension: | HCO |
| File Type Description: | Macintosh Sound Resource Fork File |
| File Type Developer: | Apple |
| Primary Associated Software: | macOS |
| Primary Software Developer: | Apple |
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Apple developed the HCO file extension, also know as a Macintosh Sound Resource Fork File file, for the macOS software package. Our internal web tracking data indicates that Windows 10 operating system users, and those living in United States, are the most likely to use Macintosh Sound Resource Fork File files. Statisically, these users are most likely running the Google Chrome internet browser.
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Mac |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .PASCAL | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .DAE | Sony | 3D Image Files | Digital Asset Exchange File |
| .SPS | IBM | Data Files | SPSS Program File |
| .DFONT | Open Source | Font Files | Mac OS X Data Fork Font |
| .PHTML | Opera Software | Web Files | PHP Web Page |
| .ERIC | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .STAGE1 | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .DEL | Apple | Data Files | Apple Safari |
| .APK | Compressed Files | Android Package File | |
| .ASPX | Microsoft Corporation | Web Files | Active Server Page Extended ASP.NET Script |
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