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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
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ECF - Extension Details
Date Added: November 09, 2008
File Extension:  .ECF
Description 1: .ECF file extension is linked with Outlook Addin file. This file adds more features to Microsoft Outlook email application. It can be managed via Addin Manager Option within the Outlook application. Microsoft Outlook is an email application and a personal information manager rolled into one. It also has other nifty features such as a calendar, contact and task managers, web browsing, journal and note taking.
Description 2: .ECF file extension is linked with Outook Addin. .ECF file adds features to your MS Outlook email application. .ECF files can be managed by using the "Addin Manager option within your MS Outlook. Latest versions of MS Outlook offers users edgier features that can help you manage your lifestyle. .ECF file extension and Outlook Addin are owned and developed by Microsoft Corp.
Description 3: .ECF file extension is linked with Microsoft Exchange Server File. This is the file extension for the extended configuration file utilized by Microsoft Exchange Server the messaging system that has been designed to specifically meet the challenges of emailing and to address the needs of varying clients. Major features include: electronic mail, contacts, calendaring and tasks; it also has support for webbased and mobile access to information, as well as support for data storage.
Description 4: .ECF file extension is linked with Eventcorder file an application that records events and clickviews. Eventcorder is a userfriendly, versatile and visual macro player and recorder. It is usually packaged as Eventcorder Suite which contains a set of applications and tools for users to create regression, GUI testing, simple to complex automation, selfrunning presentations, benchmarking and data inputting. .ECF file extension and Eventcorder are owned and developed by CMS.
File Type:   Movie, video, multimedia file
Mode: Binary
Program(s) to Open:  Windows: CMS Eventcorder suite
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