Datadog is a monitoring service for cloud-scale applications, bringing together data from servers, databases, tools, and services to present a unified view of…

NetCrunch is a Windows Server–based network monitoring tool that boasts high performance and impressive scalability even in a single-server deployment.

HappyApps is an online app uptime monitoring platform.

Mindarray is a network monitoring software which includes BSM, SLA with real time monitoring & analytics.

ntop is software that probes a computer network to show network use in a way similar to what the program top does for processes.

BitNinja constantly monitors the number of simultaneous incoming and outgoing connections and blocks DoS (Denial of Service) attacks.

Dynatrace APM tools provide user experience analysis that identifies and resolves application performance issues faster than ever before.

CoScale delivers full stack performance monitoring, optimized for large production and container environments, and powered by anomaly detection.

Scalyr is a server log monitoring tool.

Monit is a free, open source process supervision tool for Unix and Linux.