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 ## Monitoring
 *Monitoring software.*
 
+* [Alerta](https://github.com/guardian/alerta) - Distributed, scaleable and flexible monitoring system 
 * [Cacti](http://www.cacti.net) - Web-based network monitoring and graphing tool.
 * [Cabot](http://cabotapp.com/) - Monitoring and alerts, similar to PagerDuty.
 * [check_mk](http://mathias-kettner.com/check_mk.html) - Collection of extensions for Nagios.