SNMPAgent is a Cacti system plugin offering a memory persistent SNMP agent based on NET-SNMP. It includes the official Cacti MIB.
This plugin allows other Cacti plugins to register custom MIB files as well as generating SNMP notifications. Additionally Cacti can Monitor itself or being monitored by a foreign NMS using SNMP.
Graph and data templates are part of the download package.
Over Monitor is a Web App for Smartphone that can check the status of your server. The application was created to monitor your server even when you not have of your PC, with a smartphone you can check the status of the server.
TheEye is a php-based remote monitor.
Executes remotes tests (disk usage, memory free, cpu usage, services status) through ssh/rsh and saves results in a mysql db. Tests are highly configurables.
Html report & mail alerts.