Open CTT file - The best software for opening .ctt files

CTT files: what are they and how do I open them?

Are you facing difficulties opening unknown files on your computer, or wondering exactly what this file is?
We've got the information and best software solutions for opening these files effortlessly.

.ctt file type #1: Windows Live Messenger contact list file

Files with ctt suffix can be typically found as old contact files for Window Live Messenger instant messaging client.

Further details:

File extension ctt is most likely best known for its use in Microsoft Windows Live Messenger up to version 4.6 and older for its contacts file format.

CTT is a proprietary file format used by Microsoft software. it contains save list of contacts and groups used by the MSN/Live Messenger instant messaging program in XML format. It is used for exporting and importing of whole contact groups.

A typical *.ctt file looks something like this:

<?xml version="1.0"?>
<messenger>
  <service name=".NET Messenger Service">
    <contactlist>
      <contact>first_contact@some_domain.com</contact>
      <contact>second_contact@some_domain.com</contact>
      <contact>third_contact@some_domain.com</contact>

      ...

      <contact>last_contact@some_domain.com</contact>
    </contactlist>
  </service> 
</messenger>

Microsoft abandoned the use of CTT format in newer versions. Latest versions of MSN grab contacts directly from social networks / e-mail clients or work with CSV format instead. However, it may be still possible to import .ctt file to latest MSN.

Considering the program was replaced by Skype, this file type is more than obsolete now.

Open file with:

Windows Live Messenger

An instant messaging application from Microsoft

Windows Live Messenger for Mac

Free instant messaging client for Microsoft Live messaging service

.ctt file type #2: LabVIEW control template

A ctt file extension is related to the LabVIEW and used for its control template files.

Further details:

The ctt file extension is associated with the LabVIEW, a graphical programming platform that helps engineers scale from design to test and from small to large systems.

The ctt file stores template for .ctl control data.

Open file with:

LabVIEW

A development environment for engineers and scientists

What is the meaning of a file extension?

File extensions are characters that appear after the dot in a computer file's name. For example, the file "unknown-file.ctt" has the file extension "ctt". This is used to identify which program should open the file or what file type it is.
File extensions help you organize and manage files. They provide a quick and easy way to identify and associate the file type with the appropriate software.

We can help you open your file

In our database, we have collected a huge number of different file extensions, detailed descriptions, and programs that can be used to open or otherwise work with the file extensions listed in our database.
This database is an invaluable resource for users who want to understand better file extensions and what they can do with them. It also allows users to know different file types with the same purpose.

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