| File Extension: | CCK |
| File Type Description: | COMcheck Data File |
| File Type Developer: | U.S. Department of Energy |
| Primary Associated Software: | COMcheck |
| Primary Software Developer: | U.S. Department of Energy |
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COMcheck is the primary software program that utilizes the COMcheck Data File file, originally developed by U.S. Department of Energy. User statistics infer that these CCK files are popular with users from United States and most frequently found on the Windows 10 platform. A majority of people seeking info on CCK files are using the Google Chrome browser.
 | CorelDRAW Graphics Suite by Corel |
 | COMcheck by U.S. Department of Energy |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .EPW | U.S. Department of Energy | Data Files | EnergyPlus Weather Data File |
| .NC | CNC Software | CAD Files | Mastercam Numerical Control File |
| .09 | Apple | Data Files | Golden Orchard Apple II CD Rom File |
| .W3C | WinCatalog.com | Data Files | WinCatalog Collection File |
| .ACF | Valve | Game Files | Steam Application Cache File |
| .SRN | Micro Focus International plc | Data Files | Micro Focus Screen |
| .RFA | Autodesk, Inc. | Data Files | Revit Family File |
| .CLT | Clarity Legal | Page Layout Files | Clarity Legal Transcript File |
| .AC2 | National Instruments | Data Files | SPICE AC/frequency Domain Output |
| .KRF | SPARTA, Inc. | Data Files | DNSSEC-Tools Keyrec Data File |
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