List of Top Free Open Source & Self Hosted Application for Status / Uptime pages

Uptime is a measure of system reliability, expressed as the percentage of time a machine, typically a computer, has been working and available.

cState – Static status page for hyperfast Hugo. Clean design, minimal JS, super light HTML/CSS, high customization, optional admin panel, read-only API, IE8+. Best used with Netlify, Docker. MIT Go
StatPing.ng – An easy to use Status Page for your websites and applications. Statping will automatically fetch the application and render a beautiful status page with tons of features for you to build an even better status page. GPL-3.0 Docker/Go
Gatus – Automated service health dashboard. Apache-2.0 Docker
Uptime Kuma – Self-hosted website monitoring tool like “Uptime Robot”. MIT Nodejs
Vigil – Microservices Status Page. Monitors a distributed infrastructure and sends alerts (Slack, SMS, etc.). MPL-2.0 Rust/Docker