.OO3 File Extension

OmniOutliner 3 File

Developer	The Omni Group
Popularity	3.8 \| 8 Votes

What is a OO3 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.

More Information

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

Programs that open OO3 files

Mac

The Omni Group OmniOutliner 4.5

Free Trial

Verified by FileInfo.com

The FileInfo.com team has independently researched the OmniOutliner 3 file format and Mac 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.