CMT file format description

Many people often share .cmt files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .cmt files. To address this issue, we have created this page to offer assistance and guidance on handling .cmt files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .cmt files.

Our aim is to simplify the process and promote seamless use of the .cmt file format.

4 filename extension(s) found in our database.

.cmt - Chinon ES-1000 Image

The CMT graphic files are related to XnView. The CMT file is a Chinon ES-1000 Image.

Category:Graphic files
Magic:- / -

Chinon ES-1000 Image related extensions:

  • $s ZX Spectrum Hobetta Image
  • 2bp Pocket PC Bitmap Image
  • 2d Amapi Image
  • 411 Sony Mavica Picture
  • 4bt GoDot Image
  • 73i TI-73 Bitmap

.cmt - E-Sword v8 Commentary Data

The CMT data files are related to E-Sword. The CMT file is an E-Sword v8 Commentary Data. E-Sword is a Bible study computer software package created by Rick Meyers and developed for Microsoft Windows.

Category:Data files
Magic:- / -

E-Sword v8 Commentary Data related extensions:

  • bbli E-Sword Bible Module
  • bblx E-Sword Bible Data
  • brp E-Sword Bible Reading Plan
  • bzz E-Sword Bible Module
  • cmtx E-Sword v9 Commentary Data
  • dct E-Sword v8 Dictionary Data

.cmt - OCaml CMT Data

The CMT development files are related to OCaml. The CMT file is an OCaml CMT Data. OCaml (Objective Caml) is the main implementation of the Caml programming language, created by Xavier Leroy.

Category:Development files
Magic:- / -

OCaml CMT Data related extensions:

  • cmi OCaml Compiled Interface
  • cmo OCaml Compiled Bytecode
  • cmxa OCaml Library
  • ml OCaml Source Code
  • mli OCaml Interface Source
  • mly OCaml Ocamlyacc Input Data

.cmt - Hallo Northern Sky Comet Data

The CMT data files are related to Hallo Northern Sky. The CMT file is a Hallo Northern Sky Comet Data. Hallo Northern Sky (HNSKY) is a popular freeware planetarium program for Linux and Microsoft Windows to simulate the night sky.

Application:Hallo Northern Sky
Category:Data files
Magic:- / -

Hallo Northern Sky Comet Data related extensions:

  • wol SigmaNEST Batch File
  • bbg CyberSports for Basketball Game Data
  • spa Smart Protocol Analyzer Capture Data
  • scc 602PC Suite Data
  • in CFAST Input Data
  • zone ISC Bind Zone Data

Be careful.

It is important to understand that the .cmt file extension is not limited to a particular set of applications. Other programs besides the intended ones can also use the .cmt extension to create files. This includes potentially harmful programs or malware that may generate .cmt files for various purposes. Be especially cautious with .cmt files coming from untrusted or unknown sources.

Can't open a .cmt 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 an extension, you receive the following message:

Select an app to open this .cmt file

To set the .cmt file association in Windows 11, you can follow these steps

  1. Open the Settings app by clicking on the Start menu and selecting the gear icon.
  2. In the Settings app, click on System and then select Apps from the left-hand side menu.
  3. Scroll down and click on the Default apps option.
  4. Under the Default apps section, you will find various categories such as Email, Web browser, and Music player.
  5. Locate the category that matches the file type you want to associate, such as Photos for image files or Video player for video files.
  6. Click on the current default app listed under the category. A list of available apps will appear.
  7. Choose the app you want to set as the default for that file type. If the desired app is not listed, click on More apps to see additional options or click on Look for an app in the Microsoft Store to search for apps in the Store.
  8. After selecting the app, it will become the default choice for opening files of that type.

It's worth mentioning that you don't always need to set .cmt file association. Many applications can open .cmt files without requiring any specific file association to be set.

The .cmt file extension is often given incorrectly

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. Our goal in providing this list is to help users find the right information more easily and enhance their overall search experience on our website.

These misspellings were the most common in the past year:

cht, ckt, clt, cm, cmf, cmg, cmh, cmr, cmy, cnt, ct, ctm, dmt, fmt, mct

Is it possible that the filename extension is misspelled?

There is a possibility that the .cmt filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .cmt:

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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If you find the information on this .cmt page useful, please feel free to link to this page. >> CMT file