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Cacti is an open-source, web-based network monitoring and graphing tool designed as a front end to RRDtool. The software collects time-series data and creates graphs that show the performance of networks and their systems. It can monitor SNMP-enabled network devices like routers, switches, firewalls, servers and services such as HTTP, SMTP or IMAP. This allows system administrators to detect issues or trends within the infrastructure that could impact performance or security. Cacti offers a user-friendly interface for creating advanced data templates through simple point-and-click operations. Its modular design lets users add custom features through plugins and its support for multiple data collection methods makes it adaptable across different environments.