Nagios vs Neustar

Nagios, an open-source computer-software application, monitors systems, networks and infrastructure. Nagios offers monitoring and alerting services for servers, switches, applications and services. It alerts users when things go wrong and alerts them a second time when the problem has been resolved. Ethan Galstad and a group of developers originally wrote Nagios as NetSaint. As of 2015 "Agios" also transliterates the Greek word, which means "saint".

Neustar, Inc. is an American technology company that provides real-time information and analytics for the Internet, telecommunications, entertainment, and marketing industries, and a provider of clearinghouse and directory services to the global communications and Internet industries. Neustar was incorporated in Delaware in 1998. Neustar started as a business unit within Lockheed Martin Corporation. It spun off to keep the neutrality that was essential to its original core contract with the nation's telecommunications providers.