How to open O files

Did your computer fail to open an O file? We explain what O files are and recommend software that we know can open or convert your files.

What is an O file?

The .o file extension is most commonly used for compiled object files. These files are created by C compiler applications. They are usually created during the program development process and are used in place of the common program file. These files are used for a variety of platform programs including Unix and Free Pascal.

The .o file extension is also used for Atari Jaguar object module pre-linked compiled code files and Atari Jaguar 68000/mixed object module files.

O file openers, viewers, etc.

These apps are known to open certain types of O files. Remember, different programs may use O files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Microsoft OfficeMicrosoft OfficeUser submitted
PIC-C CompilerPIC-C CompilerUser submitted
QUINCY ApplicationQUINCY ApplicationUser submitted
OEditOEditUser submitted
We have not verified any programs that we know for certain can work with O-files on Mac. If you know one, please use the Suggest link below and tell us about it!
We have not verified any online services that we know for certain can work with O-files. If you know one, please use the Suggest link below and tell us about it!