Web Gradients
Coolors.co
Grabient
Color Hunt
GradientDaze
Gradient Hunt
Mesh Gradients by ls.graphics
Coolest Gradient Hues and Swatches

Device-Test
Keyboard Checker
DeviceCheck HQ
Keyboard Tester Pro
Microphone Test Online
KeyboardTester.click
HardwareTest.org
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?
Website, pricing, platforms and company facts side by side.
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CH
CoolHue
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|---|---|---|
| Website | webkul.github.io | 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 CoolHue 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
How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing CoolHue 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 CoolHue and HardwareTestingPro. For example, how are they different and which one is better?
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