EDGE Diagrammer EDGE Diagrammer is great for creating data flow diagrams and block design diagrams. DFDs illustrate the flow of data from external entities into a system, and how this data is processed. EDGE is ideal for ... Cost: $34.95 Buy full version       Trial version           Descriptions EDGE Diagrammer: EDGE Diagrammer is great for creating data flow diagrams and block design diagrams. DFDs illustrate the flow of data from external entities into a system, and how this data is processed. EDGE is ideal for creating these and all similar design diagrams, as it includes all the necessary symbols as well as a number of useful templates. For clear, professional data flow and design diagrams, choose EDGE Diagrammer - the ultimate diagramming and flowcharting tool!