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Uptime Kuma

Free
4.7/5

Self-hosted, open-source monitoring with 20-second intervals and 78+ alert channels

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Why founders use Uptime Kuma

HTTP(s)/TCP/Ping/DNS/Docker monitoring
20-second check intervals
78+ notification services
Public status pages
SSL certificate tracking
Multi-language UI
2FA support
Prometheus metrics endpoint

The Good

100% free and open-source
20-second monitoring intervals
78+ notification integrations
Unlimited monitors
Complete data ownership
Docker/Kubernetes ready

The Bad

Requires self-hosting infrastructure
Setup learning curve for non-DevOps
No managed SaaS support

The Verdict

Uptime Kuma is the indie hacker's dream for those willing to self-host. Completely free and open-source (MIT licensed), it offers 20-second monitoring intervals—10x faster than UptimeRobot's free tier—while maintaining complete control over your data. No vendor lock-in, no surprise pricing changes, no data harvesting. Deploy it on a $3/month VPS and you own your entire monitoring stack.\n\nSupports 78+ notification channels (Slack, Discord, Telegram, PagerDuty, email, webhooks), Docker container monitoring, and TCP/HTTP/DNS/ping checks. The modern, reactive UI rivals paid SaaS offerings, with beautiful ping charts and certificate expiration tracking. Ideal for developers comfortable with self-hosting who want enterprise-grade features without enterprise costs.

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Uptime Kuma Review (2026): Features, Pricing & Alternatives