For developers just starting out, PostHog is a free way to understand how your product is being used, without having to send any data to 3rd parties.

For enterprise customers, one data security becomes a key concern, or B2C businesses where using a SaaS solution is unaffordable, it's typical to see teams hosting an event capture platform, a data lake, and sophisticated analytics tools. The end result is that data scientists are needed and most developers don't have easy access to product intel. PostHog solves that gap - it lets everyone understand how your product is being used, without having to send data to 3rd parties, even once you have scaled to millions of visitors.

It has a JS snippet that can autocapture events, and pre-built libraries to push backend data to. Build up full user histories, visualize product trends, funnels, and run experiments with new features.

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 pixels, verifying mic input quality, or testing gamepad button response before a big gaming session, HardwareTestingPro gives you real-time visual feedback right in your browser.

Key features:

Keyboard Tester - detect stuck or unresponsive keys, check key rollover Mouse Tester - test click accuracy, DPI, scroll wheel, and polling rate Monitor Tester - check for dead pixels, color accuracy, and screen uniformity Microphone Tester - verify audio input levels and clarity Camera Tester - confirm webcam functionality and video quality Gamepad Tester - check controller button, joystick, and trigger response

No installs, no sign-ups, no ads slowing you down - just fast, reliable hardware checks whenever you need them. Perfect for gamers, IT professionals, remote workers, and anyone setting up new peripherals.