NagBar is a freeware NagiosIcinga and Thruk monitoring client which runs in the status bar and give updates about the monitored services. NagBar is a Mac OS X native application created using the Cocoa framework.

The idea for NagBar came from the Nagios Checker plugin for Firefox and Nagstamon.

If you are looking for open source alternative (Mac OS X native application) of this application, you can check MacNagios.

NagBar is tested on Nagios 3.x and 4.x, Icinga 1.6+ and Thruk 1.82+.

Supported Mac OS X versions are 10.7+. Tested versions are 10.8, 10.9, 10.10 and 10.11.