File Extension Library


.OO3 File Extension

  • Developer by: The Omni Group
  • Category: Data Files

What are .OO3 files and how to open them?

Can't open .OO3 file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .OO3 file.

What is a .OO3 file extension?

.OO3 file extension is created by The Omni Group. .OO3 has been classified as Data Files.

.OO3 is OmniOutliner 3 File

Data file created by OmniOutliner, a program used for organizing information; can store information using text, checkboxes, pop-up lists, and spreadsheets; used for various purposes, including note taking, tracking expenses, and creating agendas.

OO3 files can be exported to a variety of text and document file formats, including .KEY, .DOCX, .RTF, .TEX, .OPML, and .HTML.

List of all softwares that can open the OmniOutliner 3 File
Mac
The Omni Group OmniOutliner 4.5

How to fix problems with .OO3 files

  1. You need to update the application that you normally use to open .OO3 files. Only the latest version of the software supports the current .OO3 file format
  2. You need to check the .OO3 file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)