I was using Jung ( http://jung.sourceforge.net/ ) to visualize page rank and found it a little slow and difficult to scale it beyond 100 nodes. I was wondering what other tools people use for network / social network analysis and visualization.
FLARE produces rather beautiful graphs and visualisations, and in fact I have used it for just this purpose with a small private social network. In particular you may want to look at "layouts" in the demo as it gives an excellent demonstration of transforming between different ways of drawing the graph.
Check this link for pointers to several network analysis and visualization tools. They include:
Also, check Graphviz Graph Visualization Software from AT&T Labs and Cytoscape : An Open Source Platform for Complex-Network Analysis and Visualization. Cytoscape is one of the best tools and it is backed by a consortium of corporations and academic institutions.
Take a look at UBIGRAPH. It is just amazing.
I have used the Java version of Flare called Prefuse and I have been quite happy with it. The "Physics-based force-directed graph layout algorithm" is quite fine.
In my research I did not find any useful tools of the published large graph visualizations (http://blog.vrist.dk/2010/04/15/reading-up-on-dynamic-graph-layout/)
I have a couple of videos of the toolkit in action here: http://blobvis.appspot.com/screenshots
I've been toying with a combination of R, to do the analysis and some visualisation,
and gephi, for visualisation. R seems very powerful, with the right abstractions for doing statistical manipulations. It has three packages (at least) for doing social network analysis,
network. Gephi has a nice feature for drawing dynamic social networks, but I haven't fully explored its capabilities yet.