Servers fail at inconvenient times, and the difference between a quick fix and a crisis is whether you knew before your users did. Free monitoring tools alert you the moment something stops responding.

Uptime Kuma is a popular free self-hosted monitor with a clean dashboard, checks for websites, ports, and keywords, and notifications through email and messaging apps.

A monitor without notifications is just a dashboard. Configure two notification channels, test alerts deliberately, and require consecutive failures before alerting to avoid false alarms.

Hosted free tiers suit a first website with no maintenance. Pair uptime checks with disk and certificate expiry monitoring for a complete early-warning system.