- Very fast and easy implementation - Incredible low costs - Very close communication with and fast feedback from the company behind Check_MK - Almost complete API set for all automations need for an enterprise sized infrastructure - Highly customisable, flexible and extensible by several plugin mechanisms - A vast set of monitors already shipped with the product - A very secure architecture - A limit footprint on the monitored servers and devices - No Java, no application server needed to run the product - Much more, you have to experience Check_MK

I appreciate checkmk's straight-to-the-point monitoring. Even though the UI may look old, the results show clearly. The agents and SNMP are really effective, making it easy to monitor thousands of services on a wide range of network devices and vendors. I find it simple to add or modify new checks based on existing SNMP data.

Flexibility, expansion possibilities for everyone (who can use Python)