An eye on your system
Zenoss - Intelligent IT Operations Management
Show devices in a lan
track log files, block intrusions, and much more
Open Source SIEM
Scalable, distributed monitoring system for high-performance computing
MitM pentesting opensource toolkit
Highly configurable SNMPv1/v2c/v3 application-level proxy
OSPF network discovery script via SNMP.
Network performance monitoring and logging script for Cisco devices.
Batch system monitoring and archiving
Automated Bitcoin mining monitor and up-time enforcer
School assignment for a simple network traffic analyzer
Bandwidth Monitoring Tool; Console SNMP traffic monitor
Monitoring your infrastructure for free.