Addflow for WPF is a WPF custom control that is useful each time you need to display and use relationships between objects in your application: workflow diagrams, database diagrams, communication networks, organizational charts, process flows, state transitions diagrams, telephone call centers, CRM (Customer Relationship Management), expert systems, graph theory, quality control diagrams, and more. Drawings can be made interactively or programmatically. Addflow for WPF is very easy to use, very light and fast and is Runtime Royalty free. The professional edition also offers a set of graph layout algorithms (Hierarchic, Force-directed, orthogonal, series-parallel, tree, radial).