ivtools graphdraw is idraw with extensions for graph or network editing. Here is a picture of the user interface. Here is the graphdraw document for the drawing shown in the picture of the user interface.
The top node drawing tool gives you a blank node positioned at the mouse click. The bottom node drawing tool behaves the same as the text tool, and uses the typed in text to initialize the node. The edge tool draws lines that connect nodes.
Most of the mechanism of ivtools drawtool available as well.
application/graph-idraw; graphdraw %s
to test launching graphdraw when a graphdraw file is clicked.
ivtools drawing editors | idraw | drawtool | comdraw | flipbook | graphdraw |