OSSEC
Atomicorp maintains Atomic OSSEC, a commercial Host-based Intrusion Detection System derived from the OSSEC project.
Where to go next
Atomic OSSEC product documentation — agents, manager, rules, and operations: Atomic OSSEC
Atomic repository (ART) — free community packages that can include OSSEC builds: Atomic
OUM (OSSEC Updater Modified) — downloads Atomicorp CRS rules and threatfeed updates for
ossec-hids-server: OUM