Home : File Types : OO3 File

.OO3 File Extension

File TypeOmniOutliner 3 File

DeveloperThe Omni Group
3.7 (7 Votes)
CategoryData Files

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.

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Programs that open OO3 files
Updated 3/10/2016

About OO3 Files

Our goal is to help you understand what a file with a *.oo3 suffix is and how to open it.

The OmniOutliner 3 file type, file format description, and Mac programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

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