There are 7 other file types using
the MO file extension!

empty icon.mo - Modula-3 object

empty icon.mo - Dymola simulation data

empty icon.mo - GNU Gettext machine object

mo icon.mo - Pidgin instant messenger language file

mo icon.mo - Audacity language data

empty icon.mo - Modelica model

empty icon.mo - Transport Fever text game data

MO file extension - Message catalog binary data

What is mo file? How to open mo files?

File type specification:

Binary file type icon Binary file type

The mo file extension is also reported to be used for message catalog binaries in some Unix operating systems. Some users indicated that it is perhaps related to Wordpress publication system.

The default software associated to open mo file:

Unix icon

The Open Group logoUnix  Linux/Unix software

Company or developer:
The Open Group

A multi-tasking operating system for various platforms, the first version of UNIX was released in 1969. It is developed by AT&T as well as various commercial vendors, universities and non-profit organizations. Traditional Original Unix systems have characteristics of Version 7 Unix or UNIX System V. Unix Specification have Mac OS X, Mac OS X Server, Solaris, AIX, HP/UX, z/OS etc. Other systems, such as Linux and BSD are called Unix-like or Unix system-like.

Help how to open:

Probably not meant to be accessed by the user.

How to convert:

Probably cannot be converted to anything else.

List of recommended software applications associated to the .mo 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 mo file, edit mo file, convert mo file, view mo file, play mo file etc. (if exist software for corresponding action in File-Extensions.org's database).

Unspecified and all other actions for computer programs working with mo file - Message catalog binary data

Click on the software link for more information about Unix. Unix uses mo file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Linux/Unix:

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