Zabbix is a free network management system (NMS). The Zabbix server collects data from network components, monitoring systems as well as IP thermometers and stores them in a database (MySQL, PostgreSQL, Oracle RDBMS and others). Zabbix can visualise and present the measurement data in a variety of ways.
Agents are available for various systems (Windows, MacOS, FreeBSD, Linux and others) that can transmit detailed system key data to Zabbix. Proxies can be used for cross-network monitoring at several locations.