Checkmate vs Monika
A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.
Checkmate
Open-source uptime and infrastructure monitoring tool
VS
Monika
Synthetic monitoring with HTTP probes from config
| Feature | Checkmate | Monika |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 93 · Excellent | 66 · Good |
| Category | Monitoring & Status | Monitoring & Status |
| License | AGPL-3.0 | Apache-2.0 |
| Language | TypeScript | TypeScript |
| Setup difficulty | Easy | Easy |
| Min. RAM | 256 MB | 128 MB |
| Deployment | docker | docker, binary |
| GitHub stars | ★ 10,883 | ★ 628 |
| First released | 2024 | 2021 |
| Replaces | Pingdom, Better Uptime | Pingdom, Datadog Synthetics |
What are Checkmate and Monika?
Checkmate
Checkmate is an open-source server monitoring application that tracks uptime, response times, and infrastructure health. It offers incident notifications and a clean dashboard for homelabs and small teams.
- Uptime and response monitoring
- Infrastructure health agent
- Incident notifications
- Modern dashboard
Monika
Monika is a free and open-source synthetic monitoring tool that runs HTTP probes defined in a configuration file and alerts on failures. It checks uptime, response times, and assertions.
- Config-driven probes
- Response assertions
- Many alert channels
- Synthetic monitoring
Checkmate vs Monika: key differences
Both projects are written in TypeScript. Licensing differs — AGPL-3.0 for Checkmate versus Apache-2.0 for Monika. Monika is the lighter option, starting around 128 MB of RAM against 256 MB for Checkmate. Monika is the more established project (first released 2021), while Checkmate arrived in 2024. Checkmate has the considerably larger community, at 10,883 GitHub stars versus 628.
Why pick each one
Choose Checkmate if…
- Clean modern interface
- Active development
Watch out for
- Newer project
- Feature set still growing
Choose Monika if…
- Released under the Apache-2.0 license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Written in TypeScript
Frequently asked questions
Is Checkmate or Monika better?
Neither is universally better. Checkmate has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are Checkmate and Monika free and open-source?
Yes. Checkmate is licensed under AGPL-3.0 and Monika under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Checkmate and Monika with Docker?
Checkmate: yes. Monika: yes.
Which is lighter on resources, Checkmate or Monika?
Monika has the smaller minimum footprint at 128 MB of RAM, compared to about 256 MB for Checkmate. Real-world usage depends on library size, user count, and enabled features.