OpenStatus
Free Website Uptime Monitoring - Pulsetic
highlight.io: The open source monitoring platform.
Hyperping | Uptime monitoring with public status pages
Monitor, Debug and Improve Your Entire Stack
LogSnag - The event tracking tool you've been wanting
Centralized Metrics at Scale with Prometheus-as-a-Service | Logz.io
Code, test, and deploy synthetic monitoring at scale.
Better Stack
Status Page | Hyperping