The best things I like is it's GUI, It's very clearly shown all devices status with all parameters.

Nagios Xl is the best option for a large network. The best tool for live monitoring, easy to handle and understand. This product gives all kinds of detailed information which is easy to understand and even a new person can easily catch up with the thing after using this tool. That's why I will say it is easy to understand and easy to learn.

The best part it has is the data monitoring which can be used to keep track of the data that we use to monitor the network and helps you monitor through your network and also it has easy to use interface which could be a great monitoring tools for the user to go away with.