17 Beste Open-Source-Netzwerküberwachungstools im Jahr 2026 getestet

Icinga is an open-source network monitoring tool designed for system administrators and IT management. It helps monitor network resources, alerting you to any issues that may arise.

Why I picked Icinga: Icinga offers flexible configuration options, allowing you to tailor the monitoring to your specific needs. It provides detailed monitoring of network resources across Linux or Windows operating systems, with load average metrics, performance graphs over time, and status indicators for tracked services and hosts, ensuring you catch issues before they escalate. Furthermore, its alerting system ensures you're always informed about your network's status.

Standout features and integrations:

Features include a modular architecture that allows for easy expansion as your network grows. It also offers a powerful alerting system to keep you informed. Additionally, Icinga provides detailed monitoring for complete network oversight.

Integrations include Grafana, Elasticsearch, InfluxDB, Ansible, Puppet, Chef, AWS, Opsgenie, and more.

Nagios is an open-source software widely used by IT professionals and system administrators. It helps monitor network activity, server performance, and application status to ensure everything runs smoothly.

Why I picked Nagios: Nagios offers extensive plugin support, making it adaptable to various environments. It allows you to monitor a wide range of metrics with its flexible plugin architecture.

The tool provides detailed status reports and alerts to keep your team informed. Its ability to integrate with numerous plugins significantly enhances its monitoring capabilities.

Standout features and integrations:

Features include customizable alerting, which allows you to set specific thresholds. It also offers versatile reporting tools to analyze network and application performance, such as CPU usage graphs, host and service status summaries, top alert producers tracking, and real-time network monitoring analytics. Additionally, Nagios supports distributed SNMP monitoring to manage large-scale networks efficiently.

Integrations include Zenduty, PagerDuty, TaskCall, Jira, SysAid, Dynatrace, Datadog, Nagios Log Server, Nagios Fusion, Nagios Network Analyzer, Nagios Core, SNMP, NSClient++, Mod-Gearman, and more.

Netdata is an open-source, real-time IT infrastructure monitoring platform designed for sysadmins and DevOps professionals. It provides continuous monitoring of system performance and health metrics, offering immediate insights into network activities.

Why I picked Netdata: It delivers real-time performance data, which is important for immediate troubleshooting. Netdata's multi-dimensional visualization dashboards, historical comparisons across custom timeframes, and granular metrics tracking across nodes and instances make it easy to spot trends and issues as they occur.

It also supports a wide array of metrics, allowing you to monitor various aspects of system health. The tool's lightweight architecture ensures minimal impact on system resources while providing global monitoring.

Standout features and integrations:

Features include customizable dashboards that let you tailor the monitoring experience to your needs. It provides detailed visualizations for in-depth analysis of performance metrics. Additionally, Netdata's lightweight architecture ensures efficient resource usage.

Integrations include Prometheus, Grafana, InfluxDB, Elasticsearch, AWS, Google Cloud, Slack, PagerDuty, Microsoft Teams, Opsgenie, and more.

Zabbix is an enterprise-class open-source observability solution used by businesses of all sizes. It offers real-time monitoring, alerting, and data visualization to help manage network performance across on-site and cloud environments.

Why I picked Zabbix: Zabbix offers continuous monitoring, making it ideal for businesses needing constant network oversight. It provides customizable alerting to catch issues immediately.

The free version includes powerful features that support clear data visualization through its intuitive dashboard. Its scalability also supports growing networks without compromising performance.

Standout features and integrations:

Features include automated discovery, which simplifies the process of identifying network devices. Zabbix's other helpful features are its network topology maps, bandwidth monitoring, problem severity analytics, and real-time graphing. It also offers trend prediction to help anticipate potential issues. Additionally, it supports high availability for uninterrupted monitoring.

Integrations include Grafana, Slack, VMware, AWS, Azure, Docker, Kubernetes, SNMP, MySQL, PostgreSQL, and more.

Prometheus is an open-source monitoring tool designed for systems and service monitoring. It's primarily used by developers and IT teams to collect and store metrics as time-series data, providing valuable insights into system performance.

Why I picked Prometheus: Prometheus specializes in handling time-series data, which is important for performance monitoring. It uses a powerful query language called PromQL.

The tool's efficient data model allows for high dimensionality, making it adaptable to various monitoring needs. Its alerting system is flexible, enabling you to set thresholds that suit your environment.

Standout features and integrations:

Features include a multi-dimensional data model that supports high dimensionality. Its flexible query language, PromQL, extracts precise metrics. Additionally, Prometheus provides an efficient alerting mechanism through Alertmanager to notify you of any issues.

Integrations include Grafana, Kubernetes, Docker, Splunk, Consul, OpenShift, Marathon, Google Cloud, and more.

Cacti is an open-source network monitoring system used by IT teams to visualize network data. It helps in tracking network performance through detailed graphs and charts.

Why I picked Cacti: Cacti focuses on visual data representation, making it easier to understand network performance at a glance. It provides customizable graph templates, allowing you to tailor visuals to your needs.

The software’s polling system efficiently captures network data, ensuring accurate monitoring. Cacti displays metrics such as uptime, polling times, availability percentages, and customizable filtering options. The tool's interface is user-friendly, which simplifies the process of setting up and accessing data.

Standout features and integrations:

Features include a flexible graphing system that allows you to create custom visualizations. It also has a powerful data collection method to ensure accurate monitoring. Additionally, Cacti offers user-friendly templates for quick setup and data access.

Integrations include Datadog, SNMP, Apache, Net-SNMP, Nagios, and more.

Zeek is an open-source network monitoring tool designed for security monitoring and network analysis. Many security teams use it to detect and analyze network traffic for potential threats.

Why I picked Zeek: Zeek is tailored for network security analysis, making it invaluable for detecting threats. It provides detailed logs of network activity, which helps identify anomalies.

The platform also supports custom scripting, allowing you to tailor its monitoring capabilities to your needs. The tool's ability to analyze traffic at a granular level enhances its effectiveness in security contexts.

Standout features and integrations:

Features include global logging, which offers detailed insights into network activity. Its custom scripting also extends its functionality. Additionally, Zeek provides a powerful traffic analysis engine to identify patterns and anomalies.

Integrations include Elasticsearch, Logstash, Kibana, Splunk, Security Onion, Kafka, Metron, Graylog, Arkime, and more.

OpenNMS is an open-source network monitoring tool designed for distributed networks. It's mainly used by enterprises for network monitoring, traffic analysis, and alerting.

Why I picked OpenNMS: OpenNMS offers dynamic scalability, making it ideal for enterprise environments. It supports large-scale deployments with features such as Meridian, which provides a stable version for enterprises.

The platform supports customizable monitoring solutions for complex network structures. Its alerting capabilities help you stay on top of network issues efficiently.

Standout features and integrations:

Features include advanced traffic analysis, customizable alerting, quick search functionality for network monitoring, and dynamic scalability. Real-time node status and availability metrics across service categories improve network visibility. It also offers a stable enterprise version through Meridian, which ensures reliability. Additionally, the tool's support and training services further its usability for large teams.

Integrations include Grafana, Jira, TSRM, Slack, Cisco, and more.

LibreNMS is an open-source network monitoring tool designed for IT administrators and network managers. It helps monitor network devices and performance, providing valuable insights for maintaining network health.

Why I picked LibreNMS: LibreNMS offers auto-discovery capabilities, simplifying the process of managing network devices. It automatically detects devices such as routers, servers, switches, firewalls, and others on your network, reducing setup time and effort.

The tool provides detailed performance monitoring, including bandwidth utilization across different network interfaces and servers, to keep your network running efficiently. Its customizable alerting system ensures you're notified of any issues promptly.

Standout features and integrations:

Features include a customizable time-series visualization system. It also offers a detailed performance monitoring dashboard for real-time insights. Additionally, LibreNMS supports a wide range of device types.

Integrations include Slack, RANCID, Oxidized, SmokePing, collectd, NfSen, Telegraf, InfluxDB, Elasticsearch, MySQL, and more.

ntop is an open-source network monitoring tool focused on traffic analysis. It's popular among network administrators for monitoring and analyzing network traffic in real-time.

Why I picked ntop: Its strong traffic analysis provides detailed insights into network usage. ntop also offers continuous monitoring, which helps you identify traffic patterns and potential bottlenecks.

Its web-based interface makes accessing and analyzing data straightforward. The tool also supports various network protocols, enhancing its traffic analysis capabilities.

Standout features and integrations:

Features include ongoing network traffic monitoring, ensuring you catch issues as they occur. It also displays top active ASN data and detailed autonomous system monitoring. Additionally, ntop's web interface enables easy access to data and visualization tools.

Integrations include Elasticsearch, Kafka, InfluxDB, Grafana, Nagios, Prometheus, Zabbix, NetFlow, sFlow, JSON, and more.