Just came across this great Firefox Browser addon, Nagios Checker 0.11 for Nagios Network Monitoring system alerts. This is a great simple addon that shows any alarms on your nagios monitoring system simply on the browser status bar providing the need not to logon to Nagios web interface. The extension loads up in the status bar and alarms you of any network events. What I liked in the extension is that it is absolutely non-intrusive. Sits on the bottom right corner of the browser status bar and highlights any alarm. When you move your mouse over it, it displays the alarm in detail.
Once installed, restart the browser. This should load the extension on the status bar. Right-click and select Settings. As a first step, Add a new Nagios Monitoring Server and its access username and password. This allows the extension to obtain status update from Nagios.
Nagios Checker 0.11 can work on Firefox 1.x & 2.x version of the browser and can support nagios 1.x & Nagios 2.x
It provides a quite a lot of features including
Filtering the output on the Extension window
Output Display Properties
Sound Alerts when an alarm appears
Extension behaviour control and status.cgi update interval
For more information and installation, please click here