What is Checkmate?
BlueWave Labs maintains Checkmate, an open-source (AGPL-3.0) monitoring application with separate frontend and backend components. Beyond basic uptime checks, its repository documents support for HTTP, ping, port, DNS, Docker, gRPC, WebSocket and game-server monitoring, host metrics via an optional Capture agent, shareable status pages, incident tracking and scheduled maintenance. A Docker Compose setup is provided; setup and maintenance remain with the operator.
Read the full overview
Sources checked 27 September 2026: Checkmate repository, Capture agent.
Key capabilities
- Multi-protocol checks: HTTP, ping, port, DNS, Docker, gRPC, WebSocket and game-server monitoring.
- Host metrics: CPU, memory, disk and network usage via the optional Capture agent.
- Status pages and incidents: Public status pages, incident history and scheduled maintenance windows.
- Alerting: Notifications via email, Slack, Discord, Microsoft Teams, Telegram, PagerDuty and webhooks.
Checkmate covers uptime and infrastructure monitoring across many protocols (HTTP, ping, port, DNS, Docker, gRPC, WebSocket, game servers) plus host metrics and status pages. It is a monitoring and alerting tool, not full distributed tracing/APM.
Use Checkmate when the team wants a self-hosted view of key services. Identify where the monitoring instance runs so it can still report on an outage in the environment it watches.
A useful test deliberately takes down a noncritical endpoint and checks detection, alert delivery and recovery history.
Technical details
- Access
- Self-hosted
- Source model
- Open source
- Founded
- 2024
- Pricing model
- Open source
- API
- Available
- Published release
- Checkmate v3.12.0 ↗ (checked )
- Website
- github.com ↗
Official resources
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