OTT File Extension

Programs that support OTT files

• Windows ¹⁰
• Mac OS ⁴
• Linux ⁵

Windows

• LibreOffice Writer
• TextMaker Viewer
• StarOffice
• TextMaker
• OpenOffice Writer
• AbiWord
• LibreOffice
• SoftMaker Office
• Ashampoo Office
• OpenOffice

Mac OS

• LibreOffice Writer
• OpenOffice Writer
• LibreOffice
• OpenOffice

Linux

• LibreOffice Writer
• KWord
• OpenOffice Writer
• LibreOffice
• OpenOffice

How to open a OTT file?

The most common reason why a OTT file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.

The most popular programs for working with OTT files are LibreOffice Writer, KWord and TextMaker Viewer. To get the latest version of TextMaker Viewer, open the SoftMaker website where a universal installer for all operating systems is available.

Once setup is done, your operating system should assign TextMaker Viewer as the default app for OTT files.

Make TextMaker Viewer the default OTT viewer

Changing the default program in Windows

1. Start by right-clicking on your OTT file and selecting the "Open With" option. From there, click "Choose another app" to continue;
2. Inside the popup window, scroll through the list of applications and specifically choose TextMaker Viewer as the application to associate with your OTT file;
3. Check the "Always use this app" checkbox and click "OK".

Change the default app to open files on Mac

1. Right click or use Control + Left Click on the desired OTT file to access a dropdown menu of actions;
2. Select "Open in application" and click "Other";
3. Scroll down to the bottom of the window, where you will find the "Enable" menu. Default, "Recommended Programs" will be selected;
4. In this menu, choose "All Programs" and navigate to TextMaker Viewer. Check the box next to "Always open in app" to make it the default program.

Convert to and from OTT

If a OTT file is difficult to handle, you might try converting it to formats such as DOC, DO or similar, which may be easier to work with.

Please note that after converting a OTT file, some functionality may differ from the original. However, in many cases, it can be converted back to its original format.

Convert OTT to other file formats

• OTT to DOC
• OTT to DO

Finding answers to OTT file problems

If you encounter issues with OTT files, don’t worry—most can be fixed with minor software adjustments. Refer to the troubleshooting tips below.

How to edit a OTT file?

To edit OTT files, you need to install specialized software that allows you not only to open but also to modify document files. Online OTT editors usually provide fewer features than software created specifically for OpenDocument Document Template.

List of Top OTT editors 2026

Following these criteria, we have put together a list of recommended OTT editors.