JPerf - This project gives a better UI and new functionalities to the initial JPerf 1.
benchmark.js - A benchmarking library that supports high-resolution timers & returns statistically significant results.
SASUnit - SASUnit is a collection of programs and macros that are mostly used by networking experts to execute codes and verify results by inspecting datasets, macro-variables, and log files.
JSBench.me - Javascript performance benchmark playground based on Benchmark.js.
nuttcp - nuttcp is another network test tool, similar to iperf2 and iperf3, that has a number of unique features.
PPerf - PowerShell Iperf GUI - A PowerShell script to start iperf and show the output (similar to Jperf).