PagerDuty - Cloud based monitoring service
Discover on Demand - Just like Spotify's Discover Weekly, but whenever you want.
VictorOps - We make on-call suck less & help teams to solve problems faster.
Rocketgraph - Rocketgraph is an open-source drop in replacement to Firebase, except it's much better.
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.
Spotify - Map shows when two people play same song at same time