Open-source Uptime Monitoring App
"Checkmate is an open-source, self-hosted monitoring tool for tracking server hardware, uptime, response times, and incidents in real time with beautiful visualizations.
It regularly checks whether a server/website is accessible and performs optimally, providing real-time alerts and reports on the monitored services' availability, downtime, and response time.
We love what we are building here, and we continuously learn a few things about Reactjs, Nodejs, MongoDB and Docker while building Checkmate."