1. Frontend to rrdtool for monitoring systems and services Cacti is a complete frondend to rrdtool, it stores all of the necessary information to create graphs and populate them with data in a MySQL database. The frontend is completely PHP driven. Along with being able to maintain Graphs, Data Sources, and Round Robin Archives in a database, cacti handles the data gathering also. There is also SNMP support for those used to creating traffic graphs with MRTG. From Debian 3.0r0 APT