speed-test vs iperf

speed-test

Test your internet connection speed and ping using speedtest.net from the CLI (by sindresorhus)

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iperf

iperf3: A TCP, UDP, and SCTP network bandwidth measurement tool (by esnet)

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speed-test		iperf
	Project
4	Mentions	11
3,899	Stars	6,284
-	Growth	1.8%
0.0	Activity	8.2
over 2 years ago	Latest Commit	22 days ago
JavaScript	Language	C
MIT License	License	GNU General Public License v3.0 or later

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

speed-test

Posts with mentions or reviews of speed-test. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-05-05.

Terminate the Timeworn Terminals
15 projects | dev.to | 5 May 2022

speed-test lets you see how fast your internet is
Test your internet connection speed from the CLI
1 project | /r/commandline | 30 Apr 2022
Speed testing Visible with a modem
4 projects | /r/Visible | 7 Mar 2022

Speedtest.net using speed-test. These results have been wildly variable. Upload hovers around 5Mbps, sometimes going down to 4Mbps or up to 6Mbps. Download can alternate between 2.5Mbps to 25Mbps in consecutive tests, but mostly around 15Mbps. Latency seems bimodal, switching between 150ms and 250ms.
Node.js Packages and Resources
106 projects | dev.to | 6 Sep 2021

speed-test - Test your internet connection speed and ping.

iperf

Posts with mentions or reviews of iperf. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-09-19.

How can I test my equipment/infrastructure to make sure I'm capable of gigabit Internet speed?
1 project | /r/HomeNetworking | 26 May 2023
Gigabit Performance Questions
1 project | /r/openbsd | 9 Nov 2022

This discussion from the vendor might lead to other ideas... https://github.com/esnet/iperf/issues/861
Yet Another Bench Script (YABS): evaluate Linux server performance with this simple Bash script and utility
4 projects | /r/selfhosted | 19 Sep 2022

Network - network throughput (both incoming and outgoing) is tested using iperf3 on several geographically diverse public iperf servers
Python vs 100Gbps Network Speed.
2 projects | /r/Python | 5 Sep 2022

Why not just provide an iperf3 server?
Iperf3: a tcp, udp, and sctp network bandwidth measurement tool
1 project | /r/github_trends | 6 Jul 2022
Direct Play buffering on remote connections
1 project | /r/PleX | 29 Jun 2022
Weird 21Gb/s limit on 100Gb/s network.
2 projects | /r/networking | 5 May 2022
Speed testing Visible with a modem
4 projects | /r/Visible | 7 Mar 2022

File transfer using iperf3 over Tailscale. I noticed that the bandwidth to my home computer (on a 500/500 fiber connection) was higher than with speedtest.net. For the first few days I was getting downloads and uploads of 28Mbps (+/- std dev of 6Mbps) and 150ms latency (+/- 35ms). After somewhere around 100GB total transfer (maybe half of that over Tailscale), it is now downloading and uploading at 10Mbps (+/- 1Mbps). I have not seen a similar throttling in the speedtest.net results, which makes me wonder if it is being throttled by Tailscale. This shouldn't be the case, because Tailscale should generally be able to establish a direct connection, but this isn't guaranteed. So I may have hit an edge case.
What are some ways to test Internet speed other than speed test websites?
1 project | /r/HomeNetworking | 12 Feb 2022
FTP upload speed isn't great
5 projects | /r/seedboxes | 13 Jun 2021

I can add to this. I have two mini self contained projects to create multiarch static bins of mtr and iperf3 for general usage

What are some alternatives?

When comparing speed-test and iperf you can also consider the following projects:

ipfs - IPFS implementation in JavaScript

mtr - Official repository for mtr, a network diagnostic tool

torrent - download torrents with node from the CLI

ctsTraffic - ctsTraffic is a highly scalable client/server networking tool giving detailed performance and reliability analytics

node-http-proxy - A full-featured http proxy for node.js [Moved to: https://github.com/http-party/node-http-proxy]

iperf3-static - A static build of iperf3 to do network testing on remote servers.

axios - Promise based HTTP client for the browser and node.js [Moved to: https://github.com/axios/axios]

tailscale - The easiest, most secure way to use WireGuard and 2FA.

XO - ❤️ JavaScript/TypeScript linter (ESLint wrapper) with great defaults

Speed-Test - SpeedTest by OpenSpeedTest™ is a Free and Open-Source HTML5 Network Performance Estimation Tool Written in Vanilla Javascript and only uses built-in Web APIs like XMLHttpRequest (XHR), HTML, CSS, JS, & SVG. No Third-Party frameworks or libraries are Required. Started in 2011 and moved to OpenSpeedTest.com dedicated Project/Domain Name in 2013.

tty-table - Terminal table for Windows, Linux, and MacOS. Written in nodejs. Also works in browser console. Word wrap, padding, alignment, colors, Asian character support, per-column callbacks, and you can pass rows as objects or arrays. Backwards compatible with Automattic/cli-table.

mtr-static - An Apline Linux static build of mtr