OpenSIMS ties together the open source tools used for security event management into a common infrastructure. These tools include NMap, Snort, and many others. The best way to experience it is by downloading the liveCD.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.