What is the OO3 file?
The OO3 file extension can be associated with several types of files. Most often, however, a file with such an extension is associated with the OmniOutliner 3 Format format. OO3 files are supported by Mac OS operating systems. The OO3 file is one of the Data Files files, just like 1326 of the other files found in our file information database. The creator of OmniOutliner 3 Format is The Omni Group.
A program that can open the OO3 file is e.g. Omni Group Outliner.
Programs, that can open .OO3 files
| Mac OS |
How to open a .OO3 file?
If you have problems opening the file OO3, then in most cases the problem is only the lack of the proper application installed. Select one of the programs from the list and install it on your device. The operating system should automatically associate the OO3 file format with the installed program. If not, right click on your OO3 file and select from the menu "Open with" . Then select the installed program and confirm the operation. Now all OO3 files should automatically open with the selected program.
