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

HappyApps is an online app uptime monitoring platform.

GameTracker tracks your gameplay in real time, your team's world ranking and your stats for servers you play on.

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

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

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

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

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