DomainWarn vs Nagios XI

DomainWarn monitors client domains for changes to websites, DNS, MX, SPF and DMARC, and brings checks and alerts into one dashboard. Its domain check runs 21 checks across website, email, DNS and registration, with area scores and an overall score. It detects record and name-server changes, checks them against a second name server, and displays old and new values. Related issues can be grouped into incidents, with reminders and one all-clear message after recovery.

The service supports 20 notification channel types, including email, Slack, Microsoft Teams, Discord and SMS. DNS integrations include Cloudflare, Hetzner DNS, IONOS, netcup, INWX and Amazon Route 53. It is available on the web, via API, and through WordPress, Shopware and Chrome extensions. The free plan is free with three domains, two members and seven days of history. Freelancer is €19 a month; Agency is €49 a month; Agency Pro is €99 a month. The service is offered to businesses, not consumers.

Nagios XI monitors servers, network devices, applications and services from a Linux server you manage. It checks configured thresholds, records results and sends notifications. Standard includes more than 90 configuration wizards, auto-discovery, dashboards, performance graphs, an open REST API, automation, configuration rollback and snapshots. Enterprise adds SLA and capacity-planning reports, scheduled reports and pages, business process intelligence, bulk changes and an audit log. Users can be restricted to assigned host and service groups, with authentication options including Active Directory or LDAP over SSL, Microsoft Entra ID single sign-on and Duo two-factor authentication. It is self-hosted on Linux, with virtual machine images for several hypervisors and offline installation on Red Hat and CentOS Stream. A 30-day trial provides unlimited monitoring, Enterprise features and direct support without a credit card. The free plan is limited to 7 nodes or 100 services, whichever comes first. Paid perpetual licenses are priced by monitored nodes: Standard is $2,595.00 once and Enterprise is $4,690.00 once, each shown for 100 nodes.