Cacti is a network graphing solution designed to harness the power of RRDTool's data storage and graphing functionality.
License: Open Source
Cacti is a powerful open-source network monitoring tool that excels in long-term data collection and customization, but has a steeper learning curve. In contrast, PRTG Network Monitor offers a more user-friendly experience with real-time monitoring capabilities and built-in reporting, but comes with a licensing cost.