Coroutine-based concurrency library for PHP
Community-based GPL-licensed network monitoring system
Enhanced Apache Server Status page - for one or multiple servers
IP Address Management - CMDB - Ticketing - DNS and Zone Management
Command line tool for managing Amazon S3 and CloudFront services
free netflow analyzer
Xplico is a Network Forensic Analysis Tool (NFAT)
PCAP from another point of view
Linux Server and Data-Center WAN Optimization
Webinterface to (un)ban IPs in Fail2Ban
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