PagerDuty - Cloud based monitoring service
Fluentd - Fluentd is a cross platform open source data collection solution originally developed at Treasure Data.
VictorOps - We make on-call suck less & help teams to solve problems faster.
logstash - logstash is a tool for managing events and logs.
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.
Fortinet FortiAnalyzer - Fortinet FortiAnalyzer is a powerful product for Security Fabric Analytics and Automation.