The short answer is: However, there is an official free tier that is very generous for small environments, and there is always the original Nagios Core for those who want 100% free and open-source software.
Nagios Core is the original open-source monitoring engine that Nagios XI is built upon. nagios xi free
When IT administrators search for "Nagios XI free," they are usually looking for one of two things: a completely open-source alternative to the enterprise edition, or a legitimate, no-cost way to use Nagios XI itself. The short answer is: However, there is an