Fluentd - Fluentd is a cross platform open source data collection solution originally developed at Treasure Data.
PracticeProtect - Network security & identity management
Splunk - Splunk's operational intelligence platform helps unearth intelligent insights from machine data.
Acunetix - Audit your website security and web applications for SQL injection, Cross site scripting and other...
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.
Intruder - Intruder is a security monitoring platform for internet-facing systems.