iperf - A TCP, UDP, and SCTP network bandwidth measurement tool
NetCut - NetCut is a Software that helps you admin your network by purely on ARP protocol.
TamoSoft Throughput Test - TamoSoft Throughput Test is a utility for testing the performance of a wireless or wired network.
SelfishNet - Block anyone or any device from using your internet
netperf - Netperf is a benchmark that can be used to measure the performance of many different types of networking. It provides tests for both unidirectional throughput, and end-to-end latency. - HewlettPack...
CSArp-Netcut - An arpspoofing program that lets users launch spoofed arp requests to disrupt connections in a LAN