SolarWinds

Provides network performance, availability, and server monitoring.
IDERA (CopperEgg)

Insights on servers, websites, apps and services to troubleshoot issues.
Datadog

Aggregates all metrics and events to be analyzed by Dev and Ops teams.
Google StackDriver

A monitoring, logging, and diagnostic tool giving insights into app performance.
Librato

Monitors the entire IT infrastructure and generates any desired data.
Monitis

Enterprise-class network and systems monitoring SaaS for IT specialists.
Lightstep

A platform that combines tracing data and metrics to give full observability into a system.
Terraform Cloud

An Infrastructure-as-Code (IaC) tool to manage you Infrastructure lifecycle.
Icinga

An open source computer system and network monitoring application.
Microsoft Azure

Integrated cloud services within Microsoft-managed data centers.