Fortinet vs Nagios

Fortinet, Inc. is an American multinational corporation founded in 2000 by brothers Ken and Michael Xie. The company sells high performance network security products and services including their flagship integrated network security solution, the FortiGate firewall. Fortinet distributes its systems and subscription-based services using the channel partner sales method via more than 20,000 partners worldwide.

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".