Alignak has a demonstration server and Web site.
The url of the Web User Interface is: demo.alignak.net. Use admin as username and admin as password to have a look on what is happening on our monitoring server.
You can set-up your own demo server thanks to the Alignak demonstration repository. The readme file of this project is the step by step installation procedure that got used to set-up our demonstration server. You can easily adapt this procedure to make it suit to your own configuration.