.SIG File Overview

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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What is File Extension SIG?

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.

Associated Developers and Software

Duxbury MegaDots by Duxbury Systems
Microsoft Outlook by Microsoft Corporation
Duxbury Braille Translator by Duxbury Systems
Microsoft OneNote by Microsoft Corporation
QUALCOMM Eudora by Qualcomm
Duxbury QuickTac by Duxbury Systems
Broderbund PrintMaster v7 Platinum by Broderbund
Microsoft Outlook Express by Microsoft Corporation

Top SIG User Languages

Top SIG File User Browsers

Desktop Friendly?


Mobile Friendly?


Most Popular SIG File Countries

Top User Operating Systems

Windows 7 Windows 10 Windows 8.1 Windows XP

Associated Operating Systems

Windows Phone

Other File Types Related to SIG Files

Extension File Type Developer File Category File Type Description
.SKR Symantec Corporation Uncommon Files PGP Private Keyring
.SRC Unknown Developer Developer Files Source Code File
.VSPSCC Microsoft Corporation Settings Files Visual Studio Project Source Control Data
.APPX Microsoft Corporation Developer Files Windows 8 App Package
.FML Headlight Software Web Files GetRight File Mirror List
.RESW Microsoft Corporation Developer Files Microsoft Windows 8 Resources File
.ITS Open Source Audio Files Impulse Tracker Sample
.ISS Jordan Russell Settings Files Inno Setup Script
.5D Microsoft Corporation Database Files Microsoft Works File
.DSW Microsoft Corporation Settings Files Microsoft Visual Studio Workspace

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