Diagram Designer

Diagram Designer is a flowchart and diagram editor for Windows. It was developed by Michael Vinther / MeeSoft.

It has a .ddd diagram format, and a .ddt "template palette" (library-like) format.

Identification
DDD files start with bytes (hex).

DDT files start with.

Software

 * Diagram Designer
 * Website
 * GitHub project
 * [ v1.20]