VS Code
CodePen
GitHub
Node.js
RegExr
JSFiddle
CodeSandbox
Free ebook for the JS Beginners

Device-Test
Keyboard Tester Pro
Keyboard Checker
DeviceCheck HQ
HardwareTest.org
KeyboardTester.click
SetupTester
Test your keyboard, mouse, monitor, microphone, camera, and gamepad instantly in your browser. 77+ free hardware diagnostic tools - no installs & no accounts.
Which is more popular?
Based on our record, Eloquent JavaScript seems to be more popular. It has been mentioned 218 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
EJS
Eloquent JavaScript
|
|
|
|---|---|---|
| Website | eloquentjavascript.net | hardwaretestingpro.com |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from India · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Eloquent JavaScript yet.
HardwareTestingPro is a free, browser-based hardware diagnostic suite with over 77 tools to test your keyboard, mouse, monitor, microphone, camera, gamepad, and more - instantly, with no downloads or account signup required. Whether you're troubleshooting unresponsive keys, checking for dead...
What each product offers, as listed by its team.

Possible disadvantages
An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
No analysis of HardwareTestingPro yet.
Walkthroughs and reviews on video.
Eloquent JavaScript A Modern Introduction to Programming 3rd Edition by Marijn Haverbeke review
More videos
No HardwareTestingPro videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing Eloquent JavaScript and HardwareTestingPro.
HardwareTestingPro's answer:
HardwareTestingPro combines 77+ hardware diagnostic tools into a single browser-based platform - no installs, no sign-ups, and no ads getting in the way. From keyboard and mouse testing to monitor, mic, camera, and gamepad checks, everything runs instantly using your browser's built-in APIs, giving accurate real-time feedback in seconds.
HardwareTestingPro's answer:
Unlike many hardware testing tools that require downloads or account creation, HardwareTestingPro works entirely in the browser with zero friction. It offers a wider range of tools (77+) in one place, a clean and fast interface, and results you can trust without worrying about privacy or bloatware.
HardwareTestingPro's answer:
Gamers checking peripherals before matches, IT professionals troubleshooting hardware issues, remote workers setting up new equipment, and everyday users who want a quick way to confirm their keyboard, mouse, webcam, or mic is working properly.
HardwareTestingPro's answer:
HardwareTestingPro was built out of frustration with clunky, ad-heavy hardware testing websites that required downloads for simple checks. The goal was to create a fast, free, no-nonsense tool that works instantly for anyone who needs to verify their hardware is functioning correctly.
HardwareTestingPro's answer:
HardwareTestingPro is built using core web technologies - HTML, CSS, and vanilla JavaScript - along with native browser APIs (such as the Web Audio API, MediaDevices API, and Gamepad API) to power the real-time hardware testing tools directly in the browser, without relying on heavy frameworks or backend dependencies.
Share your experience with using Eloquent JavaScript and HardwareTestingPro. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

If you haven’t read Eloquent JavaScript , go check it out. It’s one of my all-time favourite programming books — hands down. - Source: dev.to / about 1 year ago
Videos, blogs, text-based teachings, YouTube project-based learning, books, and the like are all examples of various methods and mediums of acquiring skills, especially in the software engineering industry. As I continue to navigate... - Source: dev.to / almost 2 years ago
Seconded. I won't recommend it and no one I know has recommended it for a decade. It's hard for someone who doesn't know JS to know which parts has changed and is no longer the way to do things. https://github.com/getify/You-Dont-Know-JS... - Source: Hacker News / about 2 years ago
Tracking HardwareTestingPro since Aug 2026.
When comparing Eloquent JavaScript and HardwareTestingPro, you can also consider the following products.

Build and debug modern web and cloud applications, by Microsoft
Compare VS Code to Eloquent JavaScript or HardwareTestingPro:

Privacy-first device tests for microphones, cameras, screens, speakers, sensors, and more — right in your browser.
Compare Device-Test to Eloquent JavaScript or HardwareTestingPro:

A front end web development playground.
Compare CodePen to Eloquent JavaScript or HardwareTestingPro:

Free Online Keyboard Testing Tool
Compare Keyboard Tester Pro to Eloquent JavaScript or HardwareTestingPro:

Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Compare GitHub to Eloquent JavaScript or HardwareTestingPro:

Simple browser tool to check if all your keys work properly
Compare Keyboard Checker to Eloquent JavaScript or HardwareTestingPro: