Uptime Kuma is FOSS, not sure if it is missing any features you might be expecting. Very easy to set up as well. https://github.com/louislam/uptime-kuma https:

Uptime Kuma is FOSS, not sure if it is missing any features you might be expecting. Very easy to set up as well. https://github.com/louislam/uptime-kuma https://github.com/louislam/uptime-kuma