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Monitor system resources and processes from a terminal or web interface.

Monitor network faults, performance, traffic, and alarms with OpenNMS's community-driven Horizon distribution.

Self-hosted full-stack observability with eBPF telemetry and service-level insights.

Run threshold-based checks for servers, network devices, applications, and services from a Linux monitoring server.

Monitor servers, databases, middleware, and network services through agentless collection and built-in alerts.

DNS and mail configuration reports with protocol references

Discover, monitor, and manage Oracle and non-Oracle systems across data centers and cloud environments.

Maintain DNS zones with a command toolbox

Check a domain through the DNS delegation tree

Visualize DNSSEC authentication and resolution paths

Research relationships among domains, addresses and DNS providers

A network lookup suite for domains, addresses and routing

Run diagnostics from a distributed network of probes

A network and server monitor that discovers devices, tracks performance, and routes threshold-based alarms.

Monitor networks, servers, applications, and services with discovery, performance data collection, event processing, and alerting.

A hosted server-monitoring service for host metrics, cloud integrations, containers, alerts, and dashboards.

Collect application traces, metrics, logs, and error signals with language-specific agents.

Define synthetic API and browser checks as code and run them on a schedule.

Discover network devices, graph their data, and send alerts from an SNMP-based monitoring system.

VPN routing exceptions and DNS filtering options

Compare resolver and authoritative DNS answers

Browser with native blocking, encrypted DNS and optional VPN services

Independent browser with built-in blocking and private DNS options

Identify resolver behavior, DNSSEC and subnet disclosure