Systems management

Datadog, Inc. is an American company that provides an observability service for cloud-scale applications, providing monitoring of servers, databases, tools, and services, through a SaaS-based data analytics platform. Founded and headquartered in New York City, the company is a publicly traded entity on the Nasdaq stock exchange.

service management brand of the IBM Software Group

enterprise-wide administration of distributed systems including computer systems

event monitoring and alerting software

Checkmk is an open source IT infrastructure monitoring software system developed in Python and C++. It originated as an extension to Nagios and has since evolved into a self-contained monitoring platform.