Freedom251 › IT & Infrastructure
Free and open first
Best DNS Monitoring Software in 2026
DNS monitoring software can help track resolution, nameserver health, propagation, and changes to records. Compare nameserver health checks, propagation checks, and resolution checks with record-change alerts and the alert channels available. Check intervals and query locations help you consider monitoring cadence and coverage, while free-plan availability and paid-from pricing provide cost context. Paessler PRTG Network Monitor, Dotcom-Monitor, and Dynatrace Kubernetes Monitoring are among the options shown, alongside Checkmate and StatusDrift. Consider which checks and notification details fit the DNS services you need to monitor.
- 37 apps
- Research read 23 Sept 2026
- How the order is worked out
- 1
- 2
DNSai
Free plan APIMacWeb+1DNSai turns public DNS records into domain profiles and change alerts, with plans that differ in quotas and access to integrations.
- 3
Dotcom-Monitor
by Dotcom-MonitorFree plan AndroidAPIiPhone+4Dotcom-Monitor offers target monitoring with multiple alert routes and plan limits that vary by tier.
- 4
DNS Check
Free plan APIWebDNS Check pairs recurring monitoring and troubleshooting with shareable reports and an API. The free plan is limited to 10 records, while listed paid plans scale to 3,000.
- 5
Domain Monitor
Free plan AndroidAPIWebDomain Monitor covers domains, uptime and related infrastructure, with a free tier and a larger Pro allowance. Check the free plan limits and the first-month pricing change before choosing Pro.
- 6
DomainWarn
Free plan APIExtensionWebDomainWarn combines recurring domain checks with record-change monitoring and incident alerts. Its free plan is small, while paid plans begin at €19/mo and increase the domain and history allowances.
- 7
Aura Monitoring
Free plan WebChoose Aura if you need synthetic checks, multi-region verification, and status pages with alert routing.
- 8
dnshealth_exporter
Free plan LinuxSelf-hostedChoose dnshealth_exporter if you run Linux or self-hosted infrastructure and want DNS checks exposed to Prometheus, Grafana, or Alertmanager.
- 9
DNSMonit
Free plan APIWebDNSMonit combines DNS change alerts with email-security and expiration monitoring. Choose a plan based on portfolio size and the check interval and alert channels you need.
- 10
Nagios XI
Free plan APILinuxMac+3Nagios XI offers self-hosted monitoring, a limited free edition, and perpetual paid licenses priced by node count.
- 11
DNSBot.app
Free plan WebPick DNSBot.app if you need a free, browser-based DNS and infrastructure checker with broad diagnostics and exports. Look elsewhere if you require a native application or a platform beyond the web.
- 12
DriftWatch
Free plan APIWebDriftWatch combines DNS change tracking with configurable scans, team access, alerts, and an API.
- 13
Metric Tower
Free plan APISelf-hostedWebMetric Tower combines scanning, monitoring, and response features with a free tier and self-hosted Docker Compose deployment.
- 14
OpenNMS
Free plan APILinuxSelf-hosted+1OpenNMS covers network monitoring across local and remote environments, with Horizon and Meridian serving different release and subscription needs.
- 15
Paessler PRTG Network Monitor
Free plan AndroidAPIiPhone+5PRTG combines on-premises infrastructure monitoring with alerts, reports, dashboards, and an API. Check sensor needs and the single-license-per-server limit when choosing a plan.
- 16
StatusDrift
Free plan AndroidAPIiPhone+1StatusDrift combines monitors, status pages, and incident-response features, with a Free plan and paid tiers.
- 17
- 18
Down Device
Free plan WebDown Device covers several monitoring types, with plan limits for devices, intervals and data retention.
- 19
Visual Sentinel
Free plan AndroidAPIiPhone+1Choose Visual Sentinel if you need visual page comparisons alongside uptime, server, and other monitoring, with a free plan for up to three monitors.
- 20
Zabbix
Free plan APILinuxMac+3Zabbix covers a broad range of monitoring sources and methods, with synthetic browser checks and a free plan. Subscription support and server or proxy allowances vary by tier.
- 21
PageLantern
Free plan APIWebChoose PageLantern if you need externally configured monitoring across websites, APIs, DNS, or scheduled jobs, with alert channels and hosted status pages.
- 22
NsLookup.io
Free plan WebNsLookup.io combines DNS change alerts with snapshots, a history log, and a dashboard. Its free plan and multiple alert channels may suit organizations tracking record changes.
- 23
ManageEngine Applications Manager
Free plan AndroidiPhoneLinux+2Applications Manager offers tracing, mapping, real user monitoring and log correlation in a hybrid product.
- 24
UpGex DNS Monitoring
Free plan WebChoose UpGex if you need DNS checks around infrastructure changes or ongoing drift monitoring, with incident diagnostics and multiple alert channels.
- 25
Uptura
Free plan WebUptura combines site, DNS, and API monitoring with reporting in a single web platform.
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price
More in IT & Infrastructure
- Encryption Key Management Software24
- Enterprise Service Management Software29
- Exposure Management Software20
- File Integrity Monitoring Software34
- Firewall Management Software29
- Governance, Risk and Compliance Software36
- Home automation platforms25
- Honeypot Software21
- Identity and Access Management Software45
- Identity Governance Software28
- Identity Threat Detection and Response Software26
- Incident Response Software21