Opening C03 files

Did your computer fail to open a C03 file? We explain what C03 files are and recommend software that we know can open or convert your C03 files.

What is a C03 file?

Every day users like you submit information to us about specific types of files, and which programs they use to open them.

While we do not yet have a description of the C03 file format and what it is normally used for, we do know which programs are known to open these files. See the list of programs recommended by our users below.

We are constantly working on adding more file type descriptions to the site - the current count exceeds thousand by far, and more information about C03 files will hopefully be added soon.

If you have information about C03 files that you think will be helpful for others, please do use the Submit Info link below and we will add it to this page.

Generic C03

These apps are known to open certain types of C03 files. Since many different programs may use C03 files for different purposes, you may need to try a few of the apps to open your specific C03 file.

DT MaxDT MaxUser submitted
Cantax T2PlusCantax T2PlusUser submitted
T2 Pay-Per-FileT2 Pay-Per-FileUser submitted
Cantax T2Plus EducationalCantax T2Plus EducationalUser submitted
CANTAXCANTAXUser submitted
ZipZag ArchiverZipZag ArchiverUser 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 C03-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 C03-files. If you know one, please use the Suggest link below and tell us about it!