Gephi: Free open-source data visualisation and exploration software for complex networks

Just came across the awesome Gephi open graph visualisation software below thanks to an article on the O’Reilly Radar, which looks like a must-install for any analyst. 

Gehpi is a free open-source interactive data visualisation and exploration platform for all kinds of networks and complex systems, dynamic and hierarchical graphs such as free text analysis and social networks (and it runs on Windows, Mac and Linux). 

Check out the below introduction video and the WikiLeaks analysis by Jonathan Stray, download the software and some free sample data and get cracking!
Watch this video, just amazing what you can do – I wonder what happens if you use this to analyse connections between popular website pages or products for cross and up-sell.