DDT File Type

- The quick facts

What are DDT files and how to open them

Are you having problems opening a DDT 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 DDT file?

A .DDT file is a Diagram Designer Template file.

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 DDT files

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

While we have not verified the apps ourselves yet, our users have suggested 3 different DDT openers which you will find listed below.

Last updated: April 11, 2021

Suggest another file format using extension DDT

While we know of one file format using the .DDT 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 .DDT file.

Various apps that use files with this extension

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

Diagram DesignerDiagram DesignerUser submitted
WinSQLWinSQLUser submitted
C MAXC MAXUser submitted