AppDynamics vs Nagios

AppDynamics, Inc. is an American privately held application performance management and IT Operations Analytics ITOA company based in San Francisco, CA. This market is known as Application Intelligence. The company focuses on managing the performance and availability of applications across cloud computing environments as well as inside the data center. Aside from the core APM functionality AppDynamics Unified Monitoring solution provides an application-centric, integrated monitoring platform that traces and monitors every user interaction from end-user client to application code to third-party services/databases and supporting infrastructure. Unlike other unified monitoring solutions AppDynamics is one integrated platform built from the ground up for application monitoring across end-user, application, DB, and infrastructure. One modern UI, consistent data model for monitoring across distributed environment, one datastore architecture, and one flexible and easy installation.

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".