| File Extension: | SIG |
| File Type Description: | Signature File |
| File Type Developer: | Unknown Developer |
| Primary Associated Software: | Microsoft Outlook Express |
| Primary Software Developer: | Microsoft Corporation |
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Signature File files were originally developed by Microsoft Corporation for the Microsoft Outlook software application. Our data shows that SIG files are frequently utilized by PC users in China and popular on the Windows 10 platform. A high percentage of these users browse the web using Google Chrome.
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
 | iOS |
 | Android |
 | Windows Phone |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .MSI | Microsoft Corporation | Uncommon Files | Windows Installer Package |
| .ISC | Xilinx, Inc. | Developer Files | Xilinx Device Configuration File |
| .KDS | Knyzhov Dmitry | Settings Files | KD Player Skin File |
| .WDP | Microsoft Corporation | Raster Image Files | Windows Media Photo File |
| .RBS | Microsoft Corporation | Backup Files | Windows Installer Rollback Script File |
| .XWB | Microsoft Corporation | Audio Files | XACT Wave Bank |
| .PEF | Pentax | Camera Raw Files | Pentax Digital Camera Raw Image Format |
| .LOCAL | Embarcadero Technologies | Settings Files | Delphi User-Specific Project Options |
| .OBD | Microsoft Corporation | Data Files | Office Binder Document |
| .MCT | Microsoft Corporation | Data Files | Windows Live Messenger Data File |
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