Kuvasz (pronounce as [ˈkuvɒs]) is an open-source uptime and SSL monitoring service, with multiple notification channels, status pages, IAC support via YAML, Prometheus integration, a complete REST API and many more!
Monitore your websites availability, http status code (current and history), certificate, redirects and more with Grafana and Prometheus blackbox exporter.
Pulsy is a free, open-source, self-hosted uptime monitoring platform with incident tracking, TLS certificate checks, multi- channel alerts, and public status pages