ZMap is a fast single packet network scanner for network surveys
Cross-platform, C implementation of the IETF QUIC protocol
Communication framework for data-centric high-performance applications
Encrypted UDP based FTP with multicast
Packet generator and packet editor for Windows, Linux, BSD, and macOS
FreeBSD Multi PPP daemon
High capacity syslog data collection, filtering, and management.
Robust and flexible VPN network tunnelling
An universal TCP client.
Very fast network stress tool
An Open Source POWERLINK Stack
tcptrace analyzes packet tcp connections and provides analysis
A simple, portable port scanner
Real Time Tcp/Ip Stack Library
Simple software for port forwarding and routing w/o a hardware router
One of the most advanced DNS Proxy and DNS Firewall in one product.
Snare Enterprise: bit.ly/Snare-Trial
Xplico is a Network Forensic Analysis Tool (NFAT)
continuation of the famous proxychains project by netcreature
PCAP from another point of view
Datagrams and Udp For Tcl