CUI File Type

- The quick facts

What are CUI files and how to open them

Are you having problems opening a CUI file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a CUI file?

CUI files have multiple uses, and AutoCAD Custom User Interface is one of them.

AutoCAD Custom User Interface

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open CUI files

Important: Different programs may use files with the CUI file extension for different purposes, so unless you are sure which format your CUI file is, you may need to try a few different programs.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Last updated: June 29, 2022

More file formats using the CUI extension

Through our research of CUI files, we know that the following formats exist. However, we have not yet analyzed them in detail.

  • QuarkXPress Color Library UI Specs

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about CUI file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.