CMI File - opening and understanding

Did your computer fail to open a CMI file? We explain what they are used for and recommend software that we know can open or otherwise handle your .CMI files.

What is a CMI file?

A .CMI file is an OCaml bytecode (compiled interface) file. Through our analysis of CMI files, we know that one use of the format is OCaml bytecode (compiled interface). We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

How to open CMI files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension CMI for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 7 different CMI openers which you will find listed below.

Suggest another file format using extension CMI

While we know of one file format using the .CMI file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .CMI file.

Various viewers for this file format

These apps are known to open certain types of CMI files. Remember, different programs may use CMI 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
CitycomPlayerCitycomPlayerUser submitted
ImagenationImagenationUser submitted
CSMCSMUser submitted
ZaZ GP4 ToolsZaZ GP4 ToolsUser submitted
CD MateCD MateUser submitted
ImagenationImagenationUser submitted
We have not verified any software that we know for certain will work with CMI-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with CMI-files. If you know one, please use the 'Suggest a program' link below and tell us about it!