OpenNMS is an open source enterprise grade network management application that offers automated discovery, event and notification management, performance measurement, and service assurance features.
OpenNMS includes a client app for the iPhone, iPad or iPod Touch for on-the-go access, giving you the ability to view outages, nodes, alarms and add an interface to monitor.
Once you successfully login to the OpenNMS web UI, use the dashboard to get a quick ‘snapshot view’ of any outages, alarms or notifications. You can drill down and get more information about any of these sections from the Status drop down menu. The Reports section allows you to generate reports to send by e-mail or download as a PDF.