The latest stable version is 0.8.8g, released 02/21/16.
Cacti requires MySQL, PHP, RRDTool, net-snmp, and a webserver that supports PHP such as Apache or IIS. Please see the requirements section of the manual for information on how to fulfill these requirements under certain operating systems. Please use the install guide for either Unix or Windows for information about installing Cacti.
Old versions of Cacti can be found in the downloads directory.
Subscribe to the cacti-announce mailing list to be automatically notified when a new version of Cacti is released.