DNSMonit vs Paessler PRTG Network Monitor

DNSMonit is a web and API service for monitoring DNS records, email-security settings, and domain expiration. It watches A, AAAA, MX, NS, TXT, CNAME, SOA, and CAA records, then alerts when values change. Alerts can arrive by email, Slack, Discord, or webhook and include the previous and current values. Free domains are checked hourly; paid plans are checked every 15 minutes. DNSMonit analyzes SPF, DKIM, and DMARC configuration and policy settings, and monitors WHOIS data for warnings 30, 14, 7, and 1 day before expiration. Two-factor authentication is included on every plan. Free costs nothing for up to three domains. Pro costs $9 a month for up to 25 domains. Agency costs $49 a month for up to 150 domains and includes a 14-day trial without a card. MSP costs $149 a month for up to 750 domains, with API access and priority support.

Paessler PRTG Network Monitor monitors systems, devices, network traffic, applications, and other infrastructure metrics from an on-premises installation. It runs on Windows servers and includes more than 250 preconfigured sensors, each measuring one or more aspects of a device. Monitoring tools include customizable alerts, scheduled reports, distributed monitoring, and dashboards with live status information. Paessler also lists adaptive AI-driven anomaly detection and smart sensor recommendations. PRTG provides an API for monitoring data and custom features, and can send webhook notifications to Slack and Microsoft Teams. Its free iOS and Android apps display monitoring data and send push notifications, but do not support cluster setups. The free plan covers up to 100 sensors; paid plans start at $200 per month paid annually. Each server accepts one license key, so license sizes cannot be combined on a server.