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XMMAS file extension

The table below provides useful information about the .xmmas file extension. It answers questions such as:

  • What is the .xmmas file?
  • What program do I need to open a .xmmas file?
  • How can the .xmmas file be opened, edited or printed?
  • How can I convert .xmmas files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ MindManager XML Theme Data

XMMAS file is a MindManager XML Theme Data. MindManager is a commercial mind mapping software application developed by Mindjet Corporation.
XMMAS format description not yet available
Category: Data files
Application: MindJet MindManager
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
XMMAS aliases:
XMMAS related links:
XMMAS related extensions:
MindManager Map File

MindManager Map Template

MindManager XML Map

MindManager 2002 Map Template

MindManager 2002 Map Document

MindManager XML Template

Other types of files may also use the .xmmas file extension.

🚫 The .xmmas file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:


Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

MindManager Theme

🔴 Can't open a .xmmas file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .xmmas file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .xmmas file extension, write to us!

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