Lightweight, open-source website analytics. No cookies, fully GDPR/CCPA compliant, script is under 1KB. A privacy-friendly alternative to Google Analytics.

Real-time socket communication platform for web applications.

A collection of useful developer utilities, converters, games, and productivity tools. No signup required.

Analyze websites to see what technologies they’re built with.

Validator and reformatter for JSON data structures.

Open-source pastebin for quick code and text sharing with syntax highlighting.

This website created by Adam Greenough has a large list of other useful sites and tools for primarily web developers. Anything you could need to help you in your web dev journey is here, from CSS tools, to domain hosting sites. Addy Codes Toolkit has everything you need to enhance your web dev experience with a clear UI and easy to read information, it's a one stop shop for everything web dev.

Accessibility Developer Guide is online documentation that provides guidelines and best practices on how to add accessibility features to your websites. It may be useful for other code environments, but its focus is on the web. The website covers many topics on how to make your website more accessible to people who may have disabilities like colorblindness and tips on how to improve the user experience on mobile devices compared to desktop environments. the documentation is provided under...

Paste a link, download the video. No sign-up, no nonsense.