| File Extension: | FAFF |
| File Type Description: | Professional Calc Spreadsheet File |
| File Type Developer: | Unknown Developer |
| Primary Associated Software: | Professional Calc |
| Primary Software Developer: | Unknown Developer |
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Professional Calc is the primary software program that utilizes the Professional Calc Spreadsheet File file, originally developed by Unknown Developer. Commonly, Professional Calc Spreadsheet File files are found on user computers from United States, and on PCs running the Windows 10 operating system. Statisically, these users are most likely running the Google Chrome internet browser.
 | Professional Calc by Unknown Developer |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Amiga |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .C V | Unknown Developer | Uncommon Files | Unknown File Type |
| .BATH | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .AHF | Anadigm | Data Files | AnadigmDesigner ASCII Code |
| .EMR | Unknown Developer | Uncommon Files | Emrite Data File |
| .CLOG | SpreadMaster | Data Files | SpreadMaster Client Log File |
| .KMO | Unknown Developer | Data Files | Commercial Bank Czech Financial Data Exchange Format |
| .XUP | Unknown Developer | Uncommon Files | Uncommon File Extension |
| .03 | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .CHANGELOG | Unknown Developer | Uncommon Files | Project Log Or Record File |
| .KIK | Apple | Data Files | Golden Orchard Apple II CD Rom File |
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