iperf - A TCP, UDP, and SCTP network bandwidth measurement tool
Proxifier - Proxifier extends the advantages of a proxy server to network applications that don't natively support it.
TamoSoft Throughput Test - TamoSoft Throughput Test is a utility for testing the performance of a wireless or wired network.
FreeCap - FreeCap - is a program for transparency redirect connections from programs through SOCKS server.
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...
redsocks - Redsocks is a daemon running on the local system, that will transparently tunnel any TCP connection...