Checkmate vs Dotcom-Monitor

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.

Dotcom-Monitor monitors websites and infrastructure, with checks, monitoring locations and alerts listed across its plans. Monitoring capabilities include SSL expiry alerts, keyword monitoring and server monitoring. The free plan is free, billed monthly, and includes up to 25 targets, monitoring as often as every five minutes, two locations, email alerts and seven-day data retention. A subscription is $13.33 a month, billed monthly; pricing varies by platform, target count and frequency. Its plan comparison lists up to 100 targets, one-minute monitoring, 25 locations, private agents and API configuration for Subscription. Enterprise pricing is custom and includes unlimited targets, 30+ locations, SSO and MFA, and 24/7 priority support. Alert channels include email, phone call, SMS, SNMP, webhooks, WhatsApp, Slack, PagerDuty, Microsoft Teams, AlertOps, Status.io and ServiceNow. The service is listed for web, Windows, Linux, iOS and Android. Dotcom-Monitor was founded in 1998 and is headquartered in Excelsior, Minnesota, USA.