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Uptime Kuma

Uptime Kuma is a self-hosted uptime-monitoring tool — a "is my site up?" dashboard with alerting. Created by Louis Lam, it's one of the most beginner-friendly self-hosted apps: single container, instant payoff, no database to manage.

Why it matters

Once you run your own services, you want to know when one goes down. Uptime Kuma pings your sites/containers and alerts you (Telegram, Discord, email, 90+ notification channels) — the kind of thing you'd otherwise rent from Pingdom or UptimeRobot.

Key facts

  • Monitors HTTP(S), TCP, ping, DNS, and more; configurable intervals.
  • Clean status-page UI + public status pages you can share.
  • 90+ notification integrations (Telegram, Discord, Slack, email, webhooks…).
  • Single lightweight container via docker-compose; SQLite-backed, no separate DB.
  • Flagged a ✅ good first pick in self-hosting-cost-savings — tiny and satisfying.

What it replaces

Pingdom / UptimeRobot paid tiers (~$15/mo). Free once self-hosted.