Checkmate vs DNSMonit

Checkmate is a free, open-source, self-hosted dashboard for monitoring infrastructure, service uptime, PageSpeed, and incidents. It checks HTTP, ping, TCP, gRPC, WebSocket, DNS, SSL, and more than 100 game server types. Its Capture agent reports server CPU, memory, disk, temperature, and network metrics, while PageSpeed monitoring tracks Lighthouse scores and Core Web Vitals over time. Public status dashboards can show per-service uptime and incident history with custom branding. Alerts can go to email, Slack, Discord, Telegram, Twilio SMS, Pushover, ntfy, Matrix, Rocket.Chat, PagerDuty, Microsoft Teams, and webhooks. The maker says metrics, logs, incidents, and user accounts remain in the database configured by the operator, with no phone-home or telemetry pipeline. Checkmate is licensed under AGPL-3.0 and can be installed with Docker Compose or Kubernetes/Helm; its image runs on x86, Apple Silicon, and Raspberry Pi. The maker says the API accepts JSON for bulk monitor setup and provides a REST API reference. The free plan includes all features, no monitor limits, self-hosting, and 12 alert channels. There is no one-click migration import or paid support tier.

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.