Software for Graph Analysis I have some graph-data which I would like to analyze. If the software could automatically determine some characteristics (Is the graph planar, clique number or any other graph property) it would be great, but if I could move the vertexes per drag and drop it would be good enough.

I know that I can visualize graphs with Graphviz, but I can't interact with the graph.
SAGE supports interactive graph drawing. You can easily create customized software for your own use.


Graph editor