After 2 years, finally Maltego updated version 3.1 is released. Maltego is an open source intelligence and forensics application. It will offer you timous mining and gathering of information as well as the representation of this information in a easy to understand format.
Get it from here:
http://www.paterva.com/web5/client/download.php
http://maltego.blogspot.in/2012/02/maltego-31-and-casefile-10-its-live.html