Compare software

HetrixToolsUptime Kuma
Freemium

Free tier with 15 uptime and 32 blacklist monitors; paid plans add more.

 Free

Free and open source under the MIT licence.

Web Windows, macOS, Linux, Web, Self-hosted
  • Generous free tier for uptime and blacklist monitoring
  • Checks from up to 12 locations
  • Monitors HTTP, TCP, ping, DNS, Docker containers and more
  • More than ninety notification services, including most chat apps
  • Hosted only, with no self-hosted option
  • Requires an account
  • Runs from one place, so it cannot tell you about regional outages
  • NFS and other network filesystems are explicitly unsupported for its data
Web application, Hosted service Self-hosted
Closed source Open source
License not stated License: MIT
Account needed No account needed
Needs internet Works offline

Checked September 23, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.