| File Extension: | ACF |
| File Type Description: | Steam Application Cache File |
| File Type Developer: | Valve |
| Primary Associated Software: | Valve Steam |
| Primary Software Developer: | Valve |
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The ACF file extension is a Steam Application Cache File file developed originally by Adobe Systems Incorporated for Adobe Photoshop CC. Annoymous user data statistics infer that ACF files are most popular in China and with those using Windows 10 devices. Most of these users are running the Google Chrome web browser.
 | Adobe Photoshop CC by Adobe Systems Incorporated |
 | Valve Steam by Valve |
 | X-Plane by Interscape |
 | Microsoft Agent by Microsoft Corporation |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | iOS |
 | Android |
 | Linux |
 | Windows Phone |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .PKV | Valve | Compressed Files | Steam Package Data |
| .SIS | Valve | Backup Files | Steam Game Backup Information File |
| .DMX | Valve | Video Files | Source Filmmaker Project File |
| .CSD | Valve | Game Files | Steam Game Data Backup File |
| .AMX | Valve | Plugin Files | AMX Mod Plugin File |
| .VDF | Valve | Game Files | Valve Data File |
| .DEM | Valve | Game Files | Video Game Demo File |
| .VMF | Valve | Game Files | Valve Map File |
| .SMD | Valve | 3D Image Files | Valve Studiomdl Data File |
| .SPR | Valve | Raster Image Files | Half-Life Sprite File |
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