Icinga is a monitoring software project that began as a fork of Nagios. With Icinga and Icinga 2 the Icinga Project maintains two branches in parallel.
This project contains everything related to Icinga 1.x. Look for 2.x below:
Icinga 2: https://www.openhub.net/p/icinga2
Icinga Web 2: https://www.openhub.net/p/icingaweb2
Vagrant Boxes: https://www.openhub.net/p/icinga-vagrant
Puppet Modules: https://www.openhub.net/p/puppet-icinga2 & https://www.openhub.net/p/puppet-icingaweb2
Chef Cookbooks: https://www.openhub.net/p/chef-icinga2
Ansible Roles: https://www.openhub.net/p/icinga2-ansible