Arkadaşlar burada birçok yararlı fakat bedava bileşen var. Bir kenara atın lazım olur.
http://www.delphiarea.com/products/
TSimpleGraph DESCRIPTION TSimpleGraph is a visual component, which provides a simple user interface for drawing simple graphs/digraphs. User can draw nodes on the control's client area and link them together by either keyboard or mouse.
(http://www.delphiarea.com/products/simplegraph/simplegraph.gif)