What is a .OO3 file?
The .OO3 file extension is for a type of data file used by a program called OmniOutliner, which is made by The Omni Group. OmniOutliner is a tool that helps people organize their information in a very flexible way. You can think of it as a super notebook on your computer where you can not only write down your thoughts and ideas but also organize them using different features like checkboxes for tasks, pop-up lists for choices, and even small spreadsheets for numbers and calculations. This makes it really useful for a bunch of different tasks such as taking notes in class, keeping track of your spending, or planning out meetings and events.
To open a file with the .OO3 extension, you would typically use OmniOutliner version 4.5 or newer. This is because .OO3 files are specifically created by the third version of OmniOutliner, and newer versions of the software are designed to be compatible with files created by earlier versions.
One of the cool things about these .OO3 files is that they're not stuck in one format. You can change them into other types of files that might be more useful for different purposes. For example, if you've created a presentation outline in OmniOutliner, you can export it as a .KEY file to use in Keynote for a slideshow. Or, if you've written a document, you can turn it into a .DOCX file to open it in Microsoft Word. Other formats you can export to include .RTF for rich text documents, .TEX for LaTeX documents (which are used a lot in academic and scientific publishing), .OPML for sharing outlines with other outlining tools, and .HTML for publishing your information on the web.
So, in summary, .OO3 files are a versatile way to organize and store information on your computer, and they can be opened and edited with OmniOutliner 4.5 or newer. Plus, you have the option to convert them into other file types depending on what you need to do with your information.
Verification
Our goal is to help people find the most up-to-date information about file extensions for Windows, Mac, Linux, Android and iOS. We researched over 10,000 file extensions and their respective programs that open those files. If you want to suggest edits or updates about .OO3 file formats, example files, or programs that are compatible. Please contact us.