| File Extension: | CI |
| File Type Description: | Windows Content Indexer Catalog File |
| File Type Developer: | Microsoft Corporation |
| Primary Associated Software: | Microsoft Windows |
| Primary Software Developer: | Microsoft Corporation |
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Microsoft Corporation developed the Windows Content Indexer Catalog File file type when the Microsoft Windows was initially released. Annoymous user data statistics infer that CI files are most popular in Japan and with those using Windows 10 devices. A high percentage of these users browse the web using Google Chrome.
 | Microsoft Windows by Microsoft Corporation |
 | Polyspace by MathWorks |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .PSV | Sony | Game Files | PlayStation 2 Save File |
| .SBB | Microsoft Corporation | Backup Files | Office Accounting Company Backup File |
| .WKE | IBM | Spreadsheet Files | Lotus 1-2-3 Educational Version Worksheet |
| .LGA | Microsoft Corporation | Data Files | Microsoft Windows Application Log File |
| .SY_ | Microsoft Corporation | Compressed Files | Compressed SYS File |
| .KTF | Microsoft Corporation | Text Files | Microsoft Dynamics AX Kernel Text Data |
| .WEBPNP | Microsoft Corporation | System Files | Web Point And Print File |
| .DBP | Microsoft Corporation | Developer Files | Microsoft Visual Studio Visual C++ Database Project |
| .DSR | Activision | Game Files | Modern Warfare 3 Dedicated Server Recipe File |
| .WZS | Microsoft Corporation | Database Files | Microsoft Word Wizard |
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