EDGE Diagrammer is an application that you can use to draw all types of flow or organizational diagrams, and any diagram the requires blocks.This version has a long list of corrections, changes, and new developments that significantly improve functioning.
In terms of drawings, it has boxes and symbols, interconnected with different types of lines. It also allows you to work with one object or a group of them.
It also has tools to include text, design symbols, multiple zoom options, and more.