GEPHI

Gephi is the leading visualization and exploration software for all kinds of graphs and networks. Gephi is open-source and free... Bastian M., Heymann S., Jacomy M. (2009). Gephi: an open source software for exploring and manipulating networks. International AAAI Conference on Weblogs and Social Media. From AAAI [PDF].

Also known as: Gephi NGO