From Official zabbix site :
Zabbix is the ultimate enterprise-level software designed for real-time monitoring of millions of metrics collected from tens of thousands of servers, virtual machines and network devices. Zabbix is Open Source and comes at no cost.
SysGroup has written an OpenVMS agent for Zabbix. It is, therefore, possible to send Zabbix alarms from a DCL script or from an API in any program.
The following platforms are supported: VAX, Alpha, Itanium.
Some platforms, especially VAX, do not have all the items.
For the Zabbix server, the version recommended is 3.4.x
SysGroup has been developing for over 10 years a Zabbix environment (client) for OpenVMS
This environment includes:
For any question use the email firstname.lastname@example.org
Latest versions of Zabbix agent for Itanium: vms_i64_agent_zabbix.zip
Latest versions of Zabbix agent for Alpha : vms_axp_agent_zabbix.zip
Latest versions of OpenVMS templates : zbx_export_templates.zip
Two presentations, in French :