Cacti

Cacti is a comprehensive network graphing solution that makes full use of RRDTool's data storage and graphing capabilities. The Cacti project includes a fast poller, advanced graph templating, various data acquisition methods, and user management features right out of the box. This all-encompassing software is incredibly user-friendly, with a clear and intuitive interface that makes installation and management of LAN-sized networks or complex networks with hundreds of devices an easy task.

The software is feature-rich and allows for multiple data sources and acquisition methods, making it an excellent fit for any network monitoring requirements. The in-built support for graphing is advanced, and the ability to adjust the graphing templates is a huge advantage for users. The interface is not only intuitive but provides an impressive level of reporting and alerts for the user/user group, as well.

In conclusion, Cacti is an outstanding network graphing solution that offers an extensive range of features, and its user-friendly interface makes complex network management more manageable. Highly recommended.