OO3TEMPLATE file format description

Many people share .oo3template files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .oo3template file can be edited, converted or printed with. On this page, we try to provide assistance for handling .oo3template files.

1 filename extension(s) found in our database.

.oo3template - OmniOutliner 3 Document Template

The OO3TEMPLATE document files are related to OmniOutliner (Mac OS X). OO3TEMPLATE file is an OmniOutliner 3 Document Template. OmniOutliner is commercial outlining software for Mac OS X produced by The Omni Group.

OmniOutliner (Mac OS X)
Document files
- / -
OmniOutliner 3 Document Template related extensions:
Crossword Express Document
DeltaGraph Document
ClarisWorks 3 Spreadsheet
ClarisWorks Painting Drawing
Adobe Persuasion v2 Presentation
Lotus Manuscript v1 Document

Naturally, other applications may also use the .oo3template file extension. Even harmful programs can create .oo3template files. Be especially cautious with .oo3template files coming from an unknown source!

Can't open a .oo3template file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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