We! Analyze - designed to analyze ArcSight SmartConnectors logs.
Web based management tool for unixes
Network Intrusion Detection and Full Packet Capture System
Simple Multi Protocol Packet Sniffer - SMPPS
IDS + IPS for RouterOS (mikrotik)
Sniffs Packet on lan
Detect Flooder IPs, Reduce Attack Surface against HTTP Flood Attacks
NDPMon - Neighbor Discovery Protocol Monitor
A detailed user action logging engine
Open Source System and Network Monitoring for Linux Desktop
Passive Proxy Daemon sniffs packets and creates squid proxy logs