Open Source (GPLv3) Network Monitoring for Windows, Linux & Android. Written in C++ & Qt 5. Perfect to run on your desktop and monitor your servers. Simple setup, auto-detects running services, runs checks concurrently, open port scanning and alerting. Hosts with failed checks automatically rise to the top, everything that’s okay stays nice and green. Leaf Node Monitoring is a simple tool that alerts you when a server or websites is not available. No complex setup required, no config files to edit, no kubernetes cluster to manage, just a nice piece of quality software you run locally. In my 10+ years as a sysadmin I’ve setup and managed almost every monitoring suite you can think of and they all have their place. Leaf Node Monitoring is probably not suited for big teams with complex alerting rules or conditional checks, etc, but that’s not the target. The only other tool that is almost as simple, but Windows only and not open source, is cStatus by Hugo Nabais. It served as an inspiration for Leaf Node, and I still use it on my Windows machines.