Open Source Monitoring System for performance and availability.
The Free & Popular opendhcp application for Physical & Virtual Machine
Web Gateway Appliance
TraceMAC is a command-line Layer 2 traceroute for Cisco switches
Anti Spam SMTP Gateway
OPTOSS Next Gen Network Management System (NG-NetMS)
A simple, handy network addressing multitool with plenty of features.
Block or allow connections by country address blocks
Brute-forcing WAN/LAN services
MitM pentesting opensource toolkit
Generates a Unique Local IPv6 Global ID Address (Linux Only)
Captive portal and access control manager for Linux-based hotspots