PagerDuty - Cloud based monitoring service
Opsmatic - Opsmatic offers complete system visibility and configuration monitoring for fast-moving technical teams.
VictorOps - We make on-call suck less & help teams to solve problems faster.
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.
Guacamole - Access your computers from anywhere. Because the Guacamole client is an HTML5 web application, use of your computers is not tied to any one device or location. As long as you have access to a web browser, you have access to your machines.
xMatters - xMatters transforms event data into intelligent communication IT teams, avoiding outages and disruptions