Beave writes: "Sagan is an open source (GNU/GPLv2) high performance, real-time log analysis & correlation engine. It is written in C and uses a multi-threaded architecture to deliver high performance log & event analysis. The Sagan structure and Sagan rules work similarly to the Sourcefire “Snort” IDS engine. This was intentionally done to maintain compatibility with rule management software (oinkmaster/pulledpork/etc) and allows Sagan to correlate log events with your Snort IDS/IPS system. Since Sagan can write to Snort IDS/IPS databases via unified2/barnyard2 or direct SQL access, it is compatible with all Snort “consoles”. For example, Sagan is compatible with Snorby [http://www.snorby.org], Sguil [http://sguil.sourceforge.net] and the Prelude IDS framework! For more information, please visit the Sagan web site: http://sagan.quadrantsec.com./"