free netflow analyzer
Firewall log analyzer
Monitoring and reporting web gui for Bacula
Enterprise-class, distributed monitoring solution for networks & apps
OPTOSS Next Gen Network Management System (NG-NetMS)
Gerenciador de rede sem fio com FreeRADIUS.
Two-factor authentication system
Collects data about network useage using libpcap.
Lomalarga is a VPN-like service based on SSH and Linux.