Download the Diagram Designer 1.3 full version program the free setup for Windows. Diagram Designer is a software program that allows users to create and edit diagrams, flowcharts, and other types of illustrations. Diagram Designer Overview It typically includes tools for drawing shapes, adding text, and connecting elements, as well as the ability to import and export various file formats. Some examples of diagram design software include Microsoft Visio, Lucidchart, Read More …