Website: https://uptime.kuma.pet/
Source Code: https://github.com/louislam/uptime-kuma
Donate: https://github.com/sponsors/louislam, https://opencollective.com/uptime-kuma
"Uptime Kuma is a free and open-source self-hosted monitoring tool that provides visibility to ups and downs for HTTP(s), TCP, HTTP(s), HTTP(s) Keyword, Ping, DNS Record, Push, Steam Game Server, and Docker Containers. It was inspired by solutions such as uptime robot and statping, but those solutions are no longer maintained. Uptime Kuma is easy to use and can be used to monitor services in home lab or production environments. It provides visibility to ups and downs as needed and is a great self-hosted monitoring tool for that purpose."