AWS CloudWatch!

Datadog is a monitoring service for IT, Dev & Ops teams who write and run applications at scale, and want to turn the massive amounts of data produced by their apps, tools and services into a unified view of IT infrastructure. Datadog's capabilities are provided on a SaaS-based data analytics platform that enables multiple teams to work collaboratively on infrastructure issues.

Librato is a cloud-based monitoring platform for devops, development and operations teams who want the flexibility to monitor the metrics and events important to their application deployment, while leaving storage, analysis and alerting to a service that can scale with their operation.

Cloud Decision Engine's purpose is to help your making your way through the jungle of Cloud Computing services and offers.

Golang exception monitoring and profiling for the go language.

LogicMonitor provides hosted monitoring for the entire technology stack — storage, servers, networks, applications, virtualization , and cloud — in a single, unified solution. LogicMonitor includes built-in monitoring, alerting, and graphing for all devices found in the data center. LogicMonitor is changing the way IT infrastructure is monitored with its cloud-based, highly automated and easy to deploy solution.

Enterprise-grade cloud monitoring and analytics at over 1 million data points per second. Reduce downtime. Boost performance. Be at the Wavefront.