StatCounter - StatCounter is a simple but powerful real-time web analytics service that helps you track, analyse and understand your visitors so you can make good decisions to become more successful online.
PagerDuty - Cloud based monitoring service
AFSAnalytics - AFSAnalytics.
VictorOps - We make on-call suck less & help teams to solve problems faster.
Histats - Start tracking your visitors in 1 minute!
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.