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UptimeRobotWormly
Freemium

Free plan with 50 monitors; paid plans add more features.

 Paid

Paid service with a free trial that needs no email or credit card to start.

Web Web
  • 50 monitors on the free plan
  • Wide range of check types, including ports and cron jobs
  • Monitors HTTP and any TCP/IP service, including IPv6
  • Escalating alert rosters for teams
  • Hosted only
  • Some features such as multi-location checks may need a paid plan
  • Hosted service with an ongoing cost
  • More than a single small site usually needs
Hosted service Hosted service
Closed source Closed source
License not stated License not stated
Account needed Account needed
Needs internet Needs internet

Checked September 23, 2026

Checked October 2, 2026

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