Zabbix - Track, record, alert and visualize performance and availability of IT resources
Ossec - OSSEC is an Open Source Host-based Intrusion Detection System.
Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
Samhain - The Samhain host-based intrusion detection system (HIDS) provides file integrity checking and log...
Prometheus - An open-source systems monitoring and alerting toolkit.
Tripwire - Open Source Tripwire software is a security and data integrity tool useful for monitoring and...