NetSpot - NetSpot is a free app for wireless site surveys, Wi-Fi analysis, and troubleshooting
iperf - A TCP, UDP, and SCTP network bandwidth measurement tool
Vistumbler - Vistumbler is a wireless network scanner for Windows Vista and Windows 7. Features:
TamoSoft Throughput Test - TamoSoft Throughput Test is a utility for testing the performance of a wireless or wired network.
Kismet - Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system.
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...