.ECF File Overview

File Extension:	ECF
File Type Description:	Outlook Add-in
File Type Developer:	Microsoft Corporation
Primary Associated Software:	Microsoft Outlook
Primary Software Developer:	Microsoft Corporation

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Home File Types Plugin Files ECF

What is File Extension ECF?

Outlook Add-in files are the most popular type of files to carry the ECF file extension, originally developed by Microsoft Corporation for Microsoft Outlook. Website visitor analysis indicates that ECF files are commonly found on Windows 10 user machines, and are most popular in China. Google Chrome is their primary internet browser for the bulk of these users.

Associated Developers and Software

	Microsoft Exchange Server by Microsoft Corporation
	Microsoft Outlook by Microsoft Corporation
	Embird Embroidery Software by BALARAD
	WinFax by Delrina
	Eventcorder by BrineSoft
	The Sage Group SageCRM by Sage
	Micrografx Media Manager by Micrografx

Top ECF User Languages

Top ECF File User Browsers

Desktop Friendly?

Mobile Friendly?

Top User Operating Systems


Windows 10	Windows 11	Windows 6	Windows 8.1

Associated Operating Systems

	Windows
	Mac
	DOS

Other File Types Related to ECF Files

Extension	File Type Developer	File Category	File Type Description
.XLSX	Microsoft Corporation	Spreadsheet Files	Microsoft Excel Open XML Spreadsheet
.WSS	Microsoft Corporation	System Files	Microsoft Windows Sound System File
.SCF	Microsoft Corporation	System Files	Windows Explorer Command
.ORP	PV & Associates	Data Files	WinSLAM File
.PRE	IBM	Data Files	Lotus Freelance Graphics File
.CBT	Various Developers	Compressed Files	Comic Book TAR File
.RESW	Microsoft Corporation	Developer Files	Microsoft Windows 8 Resources File
.HLSLI	Microsoft Corporation	Data Files	Microsoft Visual Studio Data File
.USA	Microsoft Corporation	Data Files	American English Localization Language File
.ACCESSOR	Microsoft Corporation	Data Files	Microsoft Visual Studio Accessor File