Last Seen Up

Last Seen Up offers a smart approach to uptime monitoring by reducing false alarms caused by brief blips. Unlike traditional monitors that alert on every minor fluctuation, it confirms failures over consecutive checks before notifying users, ensuring that only genuine outages trigger alerts. Its intelligent system also collapses flapping monitors into single notifications and ignores maintenance windows, minimizing unnecessary disruptions. Designed for developers, IT teams, and operations professionals, Last Seen Up provides real-time, actionable alerts for critical service issues. The tool’s multi-channel notifications include push alerts, live countdowns on iOS lock screens, and automated phone calls, guaranteeing prompt awareness of serious outages. With checks covering HTTP, TCP, ping, DNS, SSL expiry, domain renewal, and cron job heartbeats, it provides comprehensive coverage for various service components. The free tier allows monitoring of three services, making it accessible for small teams and startups seeking reliable uptime alerts without cluttering their inboxes with false alarms.