Community-based GPL-licensed network monitoring system
Command line tool for managing Amazon S3 and CloudFront services
IP Address Management - CMDB - Ticketing - DNS and Zone Management
free netflow analyzer
Enhanced Apache Server Status page - for one or multiple servers
Xplico is a Network Forensic Analysis Tool (NFAT)
PCAP from another point of view
Linux Server and Data-Center WAN Optimization
Open Source SIEM
Energy and environmental monitoring of the server room
Visual Network Management System
NfSen plugin to generate and analyze per-IP statistics
A SNMP agent for Cacti
User Computer and IP Address Tracking
Collects data about network useage using libpcap.
Hierarchical Cluster Engine project
Captive portal and access control manager for Linux-based hotspots