Nagios is an extremely powerful tool to monitor your network; however, it's text file based configuration can be daunting to the new user. Lilac Configurator is the most powerful configuration tool for Nagios. Lilac Configurator provides the following features, and more:
Lilac Configurator is an open-source tool, licensed under the GPLv2. Lilac Configurator is available for free download at The Lilac Platform Community Portal. Lilac Networks also provides commercial support options and training for Lilac Configurator and Nagios.