The ext file extension is related to the e-mail text attachment file format.

There are 4 other file types using
the EXT file extension!

empty icon.ext - Novadigm EDM file

empty icon.ext - Norton Commander extension

empty icon.ext - WS-FTP ASCII binary transfer data

empty icon.ext - Microsoft Visual Studio project extended properties

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EXT file extension - E-mail text attachment

What is ext file? How to open ext files?

File type specification:

Text file type icon Text file type

The ext file extension is associated with some e-mail clients.

The ext file is used to store text attachment.

It is saved in a simple text format and its content is viewable in a text editors, such as Windows Notepad, Notepad++ etc.

The default software associated to open ext file:

NotePad++ text editor icon

Notepad++ Team logoNotePad++ text editor  Microsoft Windows software

Company or developer:
Notepad++ Team

A very popular free text and source code editor. It supports syntax highlighting and syntax folding for C, C++, HTML, ASP, Java, Pascal, PHP, Cobol, CSS etc. Notepad++ also supports plugins to add new features. It is localized to many languages.

Help how to open:

Use text editor to view content of .ext text attachment files.

How to convert:

Compatible tools may be able to export *.ext files to other formats.

List of software applications associated to the .ext file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open ext file, edit ext file, convert ext file, view ext file, play ext file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting ext files.

Software that open ext file - E-mail text attachment

Programs supporting the exension ext on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open ext file action.

Microsoft Windows:

Main software associated with ext file by default:
NotePad++ text editor small icon NotePad++ text editor
Other suggested software:
Microsoft Windows NotePad small icon Microsoft Windows NotePad
Sublime Text small icon Sublime Text
Atom small icon Atom

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