Compare Cacti, Nagios, Zabbix, Prometheus, Grafana, Nightingale, Open-Falcon

Cacti

Cacti is a PHP/MySQL/SNMP/RRDtool based network traffic monitoring and graphing tool. It collects data via snmpget, uses RRDtool for charting, and offers strong data and user management, LDAP integration, customizable templates, and reusable monitoring graphs.

By adding templates, Cacti enables reusable monitoring for different devices and supports custom graphing with powerful data aggregation.

Nagios

Nagios is an enterprise‑grade monitoring system that tracks service status, network information, and host parameters, providing alert notifications. It runs on Linux/UNIX and offers a web‑based interface for administrators to view network health, system issues, and logs.

While still holding market share, Nagios has lagged behind modern requirements; its extensibility and ease of use need improvement, and advanced features are available only in the commercial Nagios XI.

Zabbix

Zabbix is a distributed monitoring system supporting various collection methods and agents, including SNMP, IPMI, JMX, Telnet, and SSH. Collected data is stored in a database for analysis and trigger‑based alerts.

It monitors CPU load, memory, disk usage, network status, ports, and logs, but high resource consumption can cause monitoring or alert timeouts in large environments.

Prometheus

Prometheus is a community‑backed monitoring solution with contributions from over 700 companies. Its features include a multi‑dimensional time‑series data model, PromQL query language, local and distributed storage, HTTP pull‑based data collection, optional Pushgateway, and service discovery.

Grafana

Grafana, written in Go, is an open‑source application for visualizing large‑scale metric data. It supports many data sources such as Graphite, Elasticsearch, InfluxDB, Prometheus, CloudWatch, MySQL, and OpenTSDB, each with its own query editor.

Users can combine data from multiple sources on a single dashboard, though each panel is bound to a specific data source.

Nightingale

Nightingale is a Chinese open‑source cloud‑native monitoring system developed by Didi. It follows an All‑In‑One design integrating data collection, visualization, alerting, and analysis, and integrates tightly with Prometheus, VictoriaMetrics, Grafana, Telegraf, and Datadog.

Open‑Falcon

Open‑Falcon, originated by Xiaomi’s operations team, is an open‑source, scalable enterprise monitoring solution used by over 300 companies worldwide. It has garnered more than 3,000 GitHub stars, hundreds of forks, and a large community of contributors.