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".
New Relic is an American software analytics company based in San Francisco, California. Lew Cirne In February 2013, New Relic raised $80 million from investors including Insight Venture Partners, T. Rowe Price, Benchmark Capital, Allen & Company, Trinity Ventures, Passport Capital, Dragoneer, and Tenaya Capital at a valuation of $750 million. New Relic launched an open SaaS platform in June 2013. Plug-in technologies include PaaS/cloud services, caching, database, Web servers and queuing.