Prelude is a Universal “Security Information & Event Management” (SIEM) system. According to the website, Prelude is capable of collecting, normalizing, sorting, aggregating and correletion. Furthermore, it is stated that Prelude is agentless. Meaning, that you do not have to install an agent on the system that you want to monitor.
Prelude benefits from a native support with a number of systems dedicated to enriching information even further (snort, samhain, ossec, auditd, etc.).prelude-siem.org/
Prelude also supports the following third-party software: