An eye on your system
Open source monitoring system and time series database
Open source tool to monitor your servers and websites
Scalable, distributed monitoring system for high-performance computing
Highly configurable SNMPv1/v2c/v3 application-level proxy
Network performance monitoring and logging script for Cisco devices.
A simple cacti viewer for smartphones
Bandwidth Monitoring Tool; Console SNMP traffic monitor
Detect Flooder IPs, Reduce Attack Surface against HTTP Flood Attacks
nagios-statd patch for use with python >= 2.6