Community-based GPL-licensed network monitoring system
Firewall log analyzer
A collection of Perl scripts for managing IT infrastructure devices
PHP-based looking glass for Cisco, Juniper & Zebra/Quagga routers
360-FAAR Analyze FW1 Cisco Netscreen Policy Offline Using Config/Logs
The free cross-platform antivirus software tool-kit
Various TCP/IP servers, clients and network management tools
Recursive mapping/discovery of network devices via CDP/OSPF