Nagios is an open source computer system monitoring, network monitoring, and infrastructure monitoring software application. Nagios offers monitoring and alerting services for servers, switches, applications, and services. It alerts you when things go wrong and alerts you a second time when the problem is resolved.
There is now a Zoo plug-in for Nagios available. This plug-in checks McNeel Zoo License servers for activity and license use per product. Once all licenses of one product are in use the plug-in throws a warning. A critical state is returned if the zoo server is down.
Note: The Zoo plug-in for Nagios was not developed by Robert McNeel & Associates.