| File Extension: | HCO |
| File Type Description: | Macintosh Sound Resource Fork File |
| File Type Developer: | Apple |
| Primary Associated Software: | macOS |
| Primary Software Developer: | Apple |
Optional Offer for FileViewPro by Solvusoft | EULA | Privacy Policy | Terms | Uninstall
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 |
|---|---|---|---|
| .TECH | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .M4U | Open Source | Video Files | MPEG-4 Playlist |
| .MP4 | Moving Picture Experts Group | Video Files | MPEG-4 Video File |
| .DER | Mozilla | Web Files | DER Certificate File |
| .TLB | Various Developers | Text Files | VAX Text Library |
| .REWARD | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .REQUEST | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .HEIF | Moving Picture Experts Group | Raster Image Files | High Efficiency Image Format |
| .VP | Accellera Systems Initiative | Encoded Files | Verilog Encrypted Source Code File |
| .OUT | Open Source | Executable Files | Compiled Executable File |
Optional Offer for FileViewPro by Solvusoft | EULA | Privacy Policy | Terms | Uninstall
“FileViewPro eliminates the time and frustration of trying to track down a specific piece of software to open a specific file.” - Tucows
*Files that are not supported can be opened in binary format.
Copyright © 2010-2025 FileViewPro
