.OXT File Extension

Apache OpenOffice Extension

Developer Sun Microsystems
3.7  |  69 Votes

What is an OXT file?

An OXT file is a plug-in that adds a feature to an Apache OpenOffice or LibreOffice application, such as Writer, Calc, or Impress. Examples of the features OXT files contain are advanced spell checking, additional document templates, and the ability to edit images in-app. You can install OXT files using OpenOffice and LibreOffice's Extension Manager.

More Information

Apache OpenOffice and LibreOffice are free Micrsoft Office alternatives. Both suites contain:

  • Writer: An alternative to Microsoft Word
  • Calc: An alternative to Microsoft Excel
  • Impress: An alternative to Microsoft PowerPoint
  • Draw: A vector graphics editor
  • Math: A mathematical equation creator
  • Base: A database management application

You can use an OXT file to add an additional feature to one or more of these OpenOffice/LibreOffice applications. Some OXT files are developed for use with a single application, while others are meant to be used with all OpenOffice/LibreOffice applications.

You can browse for and download OXT plug-ins at the Apache OpenOffice Repository.

How to open an OXT file

If you have Apache OpenOffice 2.2 or later, you can install an OXT file by double-clicking it. Otherwise, to install an OXT file:

  1. Open OpenOffice or LibreOffice.
  2. Select Tools → Extension Manager.
  3. Select Add.
  4. When the Add Extension(s) window appears, navigate to and open your OXT file.

You can also use the Extension Manager to check for extension updates, using the Check for Updates button.

NOTE: Some OXT files come packaged in .ZIP archives. If your OXT file is packaged in a ZIP archive, select the archive in step four above. OpenOffice will automatically extract and import the OXT file your archive contains.

Open over 400 file formats with File Viewer Plus.Free Download

Programs that open or reference OXT files

Verified by FileInfo.com

The FileInfo.com team has independently researched the Apache OpenOffice Extension file format and Mac, Windows, and Linux apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

If you would like to suggest any additions or updates to this page, please let us know.