This free and open-source lightweight server monitor changed how I keep an eye on my home lab
Beszel has become my go-to utility for monitoring the server rigs, SBCs, NAS units, and mini-PCs in my home lab

Watching your home lab grow from a modest single-server setup to a dedicated experimentation and self-hosting workspace can feel extremely gratifying. Besides adding extra computing prowess for your DIY, extra rigs let you tinker with high-availability clusters, and you can even arm them with some services that you’d typically want to avoid running on your main workstation.