Observium is a low-maintenance auto-discovering network monitoring platform supporting a wide range of device types, platforms and operating systems, etc.
License: Freemium
Observium is an open-source network monitoring tool that is highly customizable and suitable for small to medium networks, while NetCrunch offers a more comprehensive and user-friendly experience with advanced features like virtualization monitoring but comes at a higher cost. NetCrunch's stronger alerting system and support for larger enterprises make it more suitable for complex infrastructures.