iPerf3 - iPerf3 is a simple tool that measures Internet bandwidth.
benchmark.js - A benchmarking library that supports high-resolution timers & returns statistically significant results.
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...
PPerf - PowerShell Iperf GUI - A PowerShell script to start iperf and show the output (similar to Jperf).
TamoSoft Throughput Test - TamoSoft Throughput Test is a utility for testing the performance of a wireless or wired network.
iperf - A TCP, UDP, and SCTP network bandwidth measurement tool