Open source alternatives to UptimeRobot

2 projects on starwire do the same job. Ranked by how much of what UptimeRobot does each one covers, read from its README and website. Ties go to the most active.

What UptimeRobot does

  1. Uptime monitoring for websitescore
  2. Downtime alertscore
  3. Public status pages
  4. Ping, port and keyword checks
  5. SSL and domain expiry checks
  6. Response time history

Each dot in the table is one job, in this order. Square dots are core jobs and count double. Full means yes, half means partly. "See the evidence" under a project shows the line behind each one. Coverage is what a project documents, not how well it works or how hard it is to move to. How we score this

ProjectCoversStarsCommits, 12 weeksLast releaseClosed vs openedSetupLicense
CheckmateSelf-hosted uptime and server hardware monitor with incident tracking and charts Replaces it100%11k+22
853
 23 days ago100% Needs a server AGPL-3.0
Covers everything on the checklist.See the evidence
  • Uptime monitoring for websitescoreYesregularly checks whether a server/website is accessible
  • Downtime alertscoreYesproviding real-time alerts and reports
  • Public status pagesYesPublish per-service uptime under your own branding.
  • Ping, port and keyword checksYesPing ICMP latency TCP Port checks
  • SSL and domain expiry checksYesSSL expiry recorded per endpoint
  • Response time historyYesResponse times, status history and SSL expiry
uptime-kumaSelf-hosted uptime monitor with status pages and alerts Replaces it88%94k+905
221
 2 days ago83% Needs a server MIT
Covers all 2 core jobs. Partly: SSL and domain expiry checks; Response time history.See the evidence
  • Uptime monitoring for websitescoreYesUptime Kuma is an easy-to-use self-hosted monitoring tool.
  • Downtime alertscoreYesNotifications via Telegram, Discord, Gotify, Slack, Pushover
  • Public status pagesYesMultiple status pages
  • Ping, port and keyword checksYesHTTP(s) / TCP / HTTP(s) Keyword
  • SSL and domain expiry checksPartlyCertificate info
  • Response time historyPartlyPing chart

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