How to open COB files

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

What is a COB file?

The COB file extension indicates to your device which app can open the file. However, different programs may use the COB file type for different types of data.

While we do not yet describe the COB file format and its common uses, we do know which programs are known to open these files, as we receive dozens of suggestions from users like yourself every day about specific file types and which programs they use to open them.

We are continually working on adding more file type descriptions to the site, so if you have information about COB files that you think will help others, please use the Update Info link below to submit it to us - we'd love to hear from you!

Generic COB

These apps are known to open certain types of COB files. Since many different programs may use COB files for different purposes, you may need to try a few of the apps to open your specific COB file.

RM/COBOLRM/COBOLUser submitted
Caligari trueSpaceCaligari trueSpaceUser submitted
Dragon UnPACKerDragon UnPACKerUser submitted
3D Photo Browser3D Photo BrowserUser submitted
3DBrowser3DBrowserUser submitted
CoIDECoIDEUser submitted
Acucobol WorkbenchAcucobol WorkbenchUser submitted
Caligari trueSpace5.1 - DEMOCaligari trueSpace5.1 - DEMOUser submitted
OpenCobolIDEOpenCobolIDEUser submitted
ComposComposUser submitted
RUNCOBOLRUNCOBOLUser submitted
Caligari trueSpace6Caligari trueSpace6User submitted
Caligari trueSpace6.5Caligari trueSpace6.5User submitted
Caligari trueSpace6.6Caligari trueSpace6.6User submitted
Misfit Model 3DMisfit Model 3DUser submitted

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

We have not verified any programs that we know for certain can work with COB-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 COB-files. If you know one, please use the Suggest link below and tell us about it!