High performance ping tool
ZMap is a fast single packet network scanner for network surveys
ICMP-based network bandwidth measurement tool
Very fast network stress tool
Linux Server and Data-Center WAN Optimization
Hexadecimal and raw packet injector and sniffer.
Tkined/Scotty is a graphical network monitoring package
ICMP ping for Java
A simple packet sniffer for local networks
NetStress is a DDoS and network stress testing tool.
Simple Multi Protocol Packet Sniffer - SMPPS
UDP Stress Tester