OSSIM – Open Source Security Information Management
http://www.ossim.net/

OSSIM aims to unify network monitoring, security, correlation and qualification in one single tool. Using Snort, Acid, Mrtg, NTOP, OpenNMS, nmap, nessus and rrdtool they want the user to have full control over every network or security aspect. This will be added to Security Resources 2006 Internet MiniGuide.