| File Extension: | AZW3R |
| File Type Description: | Amazon KF8 eBook |
| File Type Developer: | Amazon |
| Primary Associated Software: | Calibre |
| Primary Software Developer: | Open Source |
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Calibre is the primary software program that utilizes the Amazon KF8 eBook file, originally developed by Open Source. Our internal web tracking data indicates that Windows 10 operating system users, and those living in United States, are the most likely to use Amazon KF8 eBook files. Google Chrome is their primary internet browser for the bulk of these users.
 | Kindle Previewer by Amazon |
 | Amazon Kindle by Amazon |
 | Calibre by Open Source |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
 | Linux |
 | Android |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .AZW3 | Amazon | eBook Files | Amazon KF8 eBook |
| .ERG | RacerMate Inc. | Data Files | CompuTrainer Workout File |
| .CFG | Unknown Developer | Developer Files | Configuration File |
| .GP | Sublime HQ Pty Ltd | Developer Files | Gofer Project Source |
| .MOL | Interscape | Data Files | MDL Molfile |
| .STX | Unknown Developer | Audio Files | Scream Tracker Music Interface Kit File |
| .OTF | Open Source | Font Files | OpenType Font |
| .DC2 | Kodak | Raster Image Files | Kodak Digital Camera RAW Image File |
| .VVF | Open Source | Data Files | Voc Vocabulary File |
| .RSA | Various Developers | Uncommon Files | RSA Certificate File |
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