AddFlow is an ActiveX control that lets you quickly build flowchart-enabled applications. Features such as distinct colors, fonts, shapes, styles, pictures, text, and so on for each object of the diagram (node or link) are available. Nodes stay connected when moved. Metafiles support, serialization, multi-level undo/redo, printing, zooming, Bezier and spline curves, reflexive links, link jumps, gradient colors, link autorouting, custome shapes, multiselection, scrolling, user data association, navigation in the graph.

Runtime distribution is royalty free. AddFlow allows building a graph: (1) either interactively (you can create a full diagram without any programmation) OR (2) either programmaticaly (because it offers a set of OLE automation objects, properties and methods allowing for instance to create a node at a given position)