NSClient++ (a.k.a. NSCP) is a free and open-source monitoring agent originally
built for Nagios/Icinga and now usable with most modern monitoring systems.
It exposes a wide range of system, performance and event-log checks via NRPE,
NSCA, NRDP, REST and Prometheus-compatible endpoints, and can run external
scripts in PowerShell, Python, Lua, Visual Basic and many more languages.
