FreeBSD Multi PPP daemon
Serial <-> TCP/IP, Serial <-> UDP/IP, TCP/IP <-> UDP/IP
Stream manager
An impressive early implementation of TCP/IP
Simple Multi Protocol Packet Sniffer - SMPPS
The Java NIO based TCP port mapper
XML Traffic Generator
A Java Version of Magnie's Mesh Server for VPS
Monitor your network services and displays a DEFCon level
The 'NES Open Switch' network protocol stack.