A complete OpenSource Network Management System Is SNMP-Standard Oriented (tested on Cisco and Linux). It Integrates Syslog, Tacacs, RRDtool (Performance Graphs), Maps, Traps, TFTP, Autodiscovery, Sound Alerts, AAA, Modular and Extensible.
...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.
At least the SNMPAgent can also be used as high performant bridge to cache non SNMP data polled by custom scripts and stored using a custom MIB.
NMSS is a NMS ( network monitoring system) and providing detail Information about system.Use snmp from getting data from snmp enable device and reporting problem that happen on the network over sms or email. writtenin in php and use mysql database.