
Eloquent JavaScript
JavaScript.com
Scrimba
React Tutorial
JavaScript Quiz
Free Code Camp
JavaScript Knowledge Map
Learn JavaScript with guided tests and flashcards

HardwareTest.org
Toolmate.io
Cpstest.org
Mouse Sensitivity Converter
dfaccount.com
Clicking Speed Tester
ClickSpeedr
Test your mouse, keyboard, and monitor right in the browser. Catch a double-click, a dead pixel, or a stuck key in seconds. Free, no sign-up, no install.
Which is more popular?
Based on our record, Learn JavaScript seems to be more popular. It has been mentioned 48 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | learnjavascript.online | rigpolice.com |
| Pricing | — | |
| Platforms | — | |
| Company | — | Startup from Georgia · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Learn JavaScript yet.
RigPolice is a free suite of browser-based tools for testing your gaming gear. No download, no sign-up, no account. Open a tool, run the check, and read the result in seconds. What you can test Mouse: double-click (chatter), CPS, DPI, polling rate, drag, and scroll Keyboard: key tester, key...
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
Overall verdict
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Learn JAVASCRIPT in just 5 MINUTES (2020)
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Learn JavaScript and RigPolice.
RigPolice's answer:
RigPolice is a static-first site built with Astro and Svelte, styled with Tailwind CSS, and hosted on Cloudflare. The tests use standard browser APIs, so they run on any modern device with no plugins.
RigPolice's answer:
Gamers tuning their setup, shoppers checking used hardware before they buy, and anyone who wants a quick health check on a mouse, keyboard, monitor, or phone. No technical background needed.
RigPolice's answer:
RigPolice puts every gaming-gear test in one place. Most sites cover a single check, like a mouse double-click test or a dead pixel scan. RigPolice bundles mouse, keyboard, monitor, audio, network, and mobile sensor tests under one roof, all in the browser, all free, with no sign-up. You can also embed any test on your own site with one line of code.
RigPolice's answer:
It is free with no account, no install, and no paywall. Every test runs locally in your browser, so nothing is uploaded. Results are shareable by link, the tools load fast, and one site covers gear that competitors split across many separate pages. Need a tool on your own page? Each one ships with a free embed.
RigPolice's answer:
RigPolice started from a simple frustration: testing a new or used device meant hopping between a dozen single-purpose sites, each loaded with ads and sign-up walls. The goal was one clean, fast place to run every common hardware check for free, in the browser, with nothing to install.
Share your experience with using Learn JavaScript and RigPolice. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I haven't done this course, but I have been programming with Javascript for about ~1.5years and can build things with React, the best course I found, and I bet it would translate to angular, is learnjavascript.online. Another resource... Source: over 3 years ago
The Jad Joubran courses on the other hand really upped my skill level and helped me make the jump from passive learning, exercises and very small projects to making legitimate web apps. That was probably the biggest/scariest jump I've... Source: over 3 years ago
Hi everyone! I'm in the very early stages of creating an interactive course and I would like to hear your thoughts on them. So far I've come across Scrimba and Jad Joubran's learn X series of sites (learnjavascript.online,... Source: over 3 years ago
Tracking RigPolice since Jun 2026.
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A free resource for learning and developing in JavaScript
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Free browser tools for gamers — click speed (CPS) test, reaction time, eDPI calculator, plus monitor, mouse, mic and webcam checks. No install, instant results.
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Interactive coding screencasts created in an instant
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Minecraft fans are very known to kohi. To improve your clicking speed at Minecraft PvP, test and practice your clicks with the kohi click test.
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