Having looked at other alternatives (i.e. html5 canvas, ajax, js with framwork), Flash wtih as3 is chosen for the UI for I have some experience with it a while back, also it has the ability to communicate with javascript and be embeded on web as well as standalone exe. From what I know there is no readily available framework/library.

After seeing such progressive UI (as some would call) imbued in many of the current 3d applications (i.e. grasshopper, houdini, maya and max), I have decided to start this personal project to explore the inner workings of node graphs in general by making one as a script editor for maya (through as3 native socket or python socket as cgi) and possibly sketchup (through ruby webdialog to javascript to as3)

Node graph is nothing new as a data visualisation tool or program extension. Looking at visualcomplexity for example, a lot of them use node graph as a representation method to present semantic data or network showing the relationships (lines) between entities (points). related keywords: visual IDE, UML diagram in programming, flow chart.