The open-source status page system

Percy is a visual testing and monitoring tool that focuses on detecting visual changes in web applications

Hosted System Status Pages Fully customizable, featuring incident tracking, subscriber notifications, and much more

Uptime Kuma is an easy-to-use self-hosted monitoring tool.

Code, test, and deploy synthetic monitoring at scale.

Datadog is a cloud-based monitoring and analytics platform that provides observability and security for cloud-scale applications