| File Extension: | EFC |
| File Type Description: | EFCoins File |
| File Type Developer: | Unknown Developer |
| Primary Associated Software: | Unknown Software |
| Primary Software Developer: | Unknown Developer |
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The EFC file extension is a EFCoins File file developed originally by Irradiant for eFiler. According to our internal data, EFCoins File files are most popular with users in United States, with a majority of them running Windows 10. Statisically, these users are most likely running the Google Chrome internet browser.
 | FAIRCOPY by Unknown Developer |
 | eFiler by Irradiant |
 | Unknown Software by Unknown Developer |
 | Technics KN6000 by Technics |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .CATMATERIA | Unknown Developer | Uncommon Files | Uncommon File Extension |
| .XAK | Unknown Developer | Uncommon Files | Uncommon File Extension |
| .RPTDOCUMEN | Unknown Developer | Uncommon Files | Uncommon File Extension |
| .STACK | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .EP3 | Unknown Developer | Uncommon Files | Unknown File Type |
| .PQN | Unknown Developer | Uncommon Files | Unknown File Type |
| .ONR | Unknown Developer | Uncommon Files | Uncommon File Extension |
| .400 | Unknown Developer | Graphic Files | Designer Graphics File |
| .EMK | Elex Media | Backup Files | EMK Compress Archive |
| .TFR | LucasArts Entertainment Company, LLC | Game Files | TIE Fighter Pilot File |
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*Files that are not supported can be opened in binary format.
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