
1. Zabbix

Best for: Enterprise-grade monitoring and automation
Zabbix is one of the most feature-complete open-source monitoring platforms available today.
Key features:
- Agent-based and agentless monitoring
- SNMP, IPMI, JMX, and custom scripts
- Advanced alerting and triggers
- Dashboards and long-term metrics storage
Use cases:
- Enterprise infrastructure
- Cloud and hybrid environments
- SOC monitoring