
LeetCode
Exercism
Codewars
HackerRank
CodeSignal
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CodeCombat
Project Euler is a series of challenging mathematical/computer programming problems that will...

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, Project Euler seems to be more popular. It has been mentioned 415 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | projecteuler.net | rigpolice.com |
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| Platforms | — | |
| Company | — | Startup from Georgia · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Project Euler 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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Walkthroughs and reviews on video.
Project Euler Challenges 1–4 - Coding Challenges with Florin
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Project Euler 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 Project Euler and RigPolice. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Project Euler provides a large collection of challenges in the domain of computer science and mathematics. The challenges typically involve writing a small program to figure out the solution to a clever mathematical...
If you are studying algorithms and computer programming, chances are you’ve heard of Project Euler. A collection of mathematical problems made for problem solvers who are interested to combine mathematics and...
We have no reviews of RigPolice yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Let's hope this is going to help me solve some more Project Euler [1] problems! [1] https://projecteuler.net/. - Source: Hacker News / 5 months ago
Https://projecteuler.net/ for "Thinker" brain food. (it still has the issue of not being a pragmatic use of time, but there are plenty interesting enough questions which it at least helps). - Source: Hacker News / 8 months ago
I have a Project Euler (https://projecteuler.net/) account. Though I do not register at all on the leader board I will sometimes work obsessively on a problem just to make one of the level icons light up for me. There is not really... - Source: Hacker News / 10 months ago
Tracking RigPolice since Jun 2026.
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Download and solve practice problems in over 30 different languages.
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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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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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