Community-based GPL-licensed network monitoring system
Nagios Open Source network monitoring software - The Standard In ITM
Open Source Monitoring System for performance and availability.
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Firewall log analyzer
Monitoring and reporting web gui for Bacula
A free Usenet server with SQL backend and RBAC.
Enhanced Apache Server Status page - for one or multiple servers
dhcpy6d is a server for IPv6 DHCPv6 written in Python.
Command line tool for managing Amazon S3 and CloudFront services
Proxy Cache and Web filtering Appliance
Painel de Monitoramento em PHP/MySQL
free netflow analyzer
Zenoss - Intelligent IT Operations Management
Pioneering Private and Public Cloud Management since 2008
Enterprise-class, distributed monitoring solution for networks & apps
blocklists for openbsd,freebsd,linux,iptables,bsd pf,pf,ipfilter