Checkmate vs UptimeRobot
Checkmate and UptimeRobot are both uptime monitoring software. Checkmate is open source under AGPL-3.0, with 11k GitHub stars. UptimeRobot is a commercial product from UptimeRobot.
Which to pick
- Pick Checkmate when
- You want an Uptime Kuma-style monitor that also tracks server CPU, memory and disk.
- Pick UptimeRobot when
- You want simple, cheap or free monitoring of a handful of sites with alerts.
Side by side
A self-hosted monitor for website uptime, response times, server hardware and incidents, with status pages.
Uptime monitoring for websites, ports, keywords, SSL and cron heartbeats, with status pages and a free plan.
AGPL license, and hardware monitoring needs its separate agent.
The free plan has 5-minute checks and its commercial-use terms have tightened.
Usable
Production-ready
Self-hosted server
Cloud service and mobile app
TypeScript, JavaScript and MongoDB
Not published
Open source, AGPL-3.0 (network copyleft)
Closed source, sold by UptimeRobot
Use inside your business is unrestricted. If you change it and let customers use it over the internet, you must publish your changes.
Closed source: you use it under the maker's terms and cannot change or resell the code.
11k GitHub stars
No Wikipedia article of its own
Established: started 2 years ago, latest release v3.13.1.
Not known
Other comparisons
More uptime monitors
Both sides were judged on 2026-11-03 from makers' descriptions, Wikipedia, READMEs and GitHub data. License, age and popularity lines are worked out directly.