​​Upptime is the open-source uptime monitor and status page, powered entirely by GitHub Actions and Issues.

Features:
GitHub Actions is used as an uptime monitor
Every 5 minutes, a workflow visits your website to make sure it's up
Response time is recorded every 6 hours and committed to git
Graphs of response time are generated every day
GitHub Issues are used for incident reports
An issue is opened if an endpoint is down
People from your team are assigned to the issue
Incidents reports are posted as issue comments
Issues are locked so non-members cannot comment on them
Issues are closed automatically when your site comes back up
Slack notifications are sent on updates
GitHub Pages are used for the status website
A simple, beautiful, and accessible PWA is generated
Built with Svelte and Sapper
Fetches data from this repository using the GitHub API

https://github.com/upptime/upptime