Enabling Rapid Development and Execution of Advanced Graph-‐Analysis Algorithms on Very Large Graphs by Aydin Buluc, John Gilbert, Adam Lugowski, and, Steve Reinhardt.
Great overview of the Knowledge Discovery Toolkit project and its goals.
From the website:
The Knowledge Discovery Toolbox (KDT) provides domain experts with a simple interface to analyze very large graphs quickly and effectively without requiring knowledge of the underlying graph representation or algorithms. The current version provides a tiny selection of functions on directed graphs, from simple exploratory functions to complex algorithms. Because KDT is open-source, it can be customized or extended by interested (and intrepid) users.