Open Source Monitoring System for performance and availability.
Nagios network monitoring software is enterprise server monitoring
Command line tool for managing Amazon S3 and CloudFront services
Next Generation Open Source Firewall
Firewall log analyzer
Monitoring and reporting web gui for Bacula
Anti Spam SMTP Gateway
Wide Area Network Emulator
The professional way to manage your WiFi network using FreeRADIUS
Access policy manager for Squid 3 cache server
Enterprise-class, distributed monitoring solution for networks & apps
blocklists for openbsd,freebsd,linux,iptables,bsd pf,pf,ipfilter
Xplico is a Network Forensic Analysis Tool (NFAT)
Complete WAMP Server - PHP Apache MySQL for Windows.
PCAP from another point of view
A powerful network security tool, easy, safe and totally free.
Powerfull Web Application Firewall for PHP
Linux Server and Data-Center WAN Optimization
A small fast Template Engine for PHP, without a huge framework.