File Extension Search

.oo3 File Extension

Developer: The Omni Group
File type: OmniOutliner 3 File
You're here because you have a file that has a file extension ending in .oo3. Files with the file extension .oo3 can only be launched by certain applications. It's possible that .oo3 files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .oo3 file?

The .oo3 file extension is classified as data files that are usually created by the OmniOutliner program. This program is used for information organization. In other words, this software allows users to create, collect and organize data. The good thing about this software is that it is packed with amazing features such as creating documents of various types, whether they are plain text, dates, pop-ups, etc. All the files created by the software, whether they contain spreadsheets, check lists, pop-up lists and a lot more, are called .oo3 files. The .oo3 files can usually be opened with the use of The Omni Group OmniOutliner for MAC OS, but since these files can be transported into a variety of formats whether in .docx, .html, etc. it is not difficult to access these files on one’s computer even if the OmniOutliner software is not installed. Another application associated with the .oo3 file extension is the International S-57 Hydrographic Data, software used mostly in marine navigation.

how to open a .oo3 file?

Launch a .oo3 file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .oo3 file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .oo3 files aren't yet associated with it. In this case, when you try to open a .oo3 file, you can tell Windows which application is the correct one for that file. From then on, opening a  .oo3 file will open the correct application. Click here to fix .oo3 file association errors

applications that open a .oo3 file

The Omni Group OmniOutliner

The Omni Group OmniOutliner

The Omni Group OmniOutliner program is software that is classified as an information management and productivity application that was developed by The Omni Group, a popular software development organization that creates programs for Mac platforms and other Apple devices. OmniOutliner is implemented with support for computers running on compatible Mac OS versions and other newly released Apple devices like the Apple iPad. There are standard and professional versions of this software, in which the main differences between these two versions are the features integrated into each version for handling and including multiple pieces of data (in different formats) into graphical or textual information management projects. Agendas and to-do lists for the home and office can be created using The Omni Group OmniOutliner, and these information management projects can be integrated with different functionalities like pop-up boxes, check boxes and multimedia content. This software also allows users to separate into columns different types of information found in a single information management project. For instance, pop-up lists can be classified under one column, while check boxes and pure text like dates, reminders and numerical or statistical data can be categorized under their respective columns within the same project.

a word of warning

Be careful not to rename the extension on .oo3 files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .oo3. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.
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