A window.fetch JavaScript polyfill.
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💾 Offline storage, improved. Wraps IndexedDB, WebSQL, or localStorage using a simple but powerful API.
⚡ Write Native with TypeScript ✨ Best of all worlds (TypeScript, Swift, Objective C, Kotlin, Java, Dart). Use what you love ❤️ Angular, React, Solid, Svelte, Vue with: iOS (UIKit, SwiftUI), Android (View, Jetpack Compose), Flutter and you name it compatible.
Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.
Cheatsheet for the JavaScript knowledge you will frequently encounter in modern projects.
Modern JavaScript Tutorial
A modified web browser that helps in responsive web development. A web developer's must have dev-tool.
Standard Library
Javascript audio library for the modern web.
The official mirror of the V8 Git repository
JavaScript image gallery for mobile and desktop, modular, framework independent
JavaScript syntax highlighter with language auto-detection and zero dependencies.
📗🌐 🚢 Comprehensive and exhaustive JavaScript & Node.js testing best practices (August 2025)
API, CLI, and Web App for analyzing and finding a person's profile in 1000 social media \ websites
Slint is an open-source declarative GUI toolkit to build native user interfaces for Rust, C++, JavaScript, or Python apps.
p5.js is a client-side JS platform that empowers artists, designers, students, and anyone to learn to code and express themselves creatively on the web. It is based on the core principles of Processing. Looking for p5.js 2.0? http://beta.p5js.org
A Foundation for Scalable Cross-Platform Apps
Bootstrap 5 & Material Design UI KIT
MagicMirror² is an open source modular smart mirror platform. With a growing list of installable modules, the MagicMirror² allows you to convert your hallway or bathroom mirror into your personal assistant.
:ram: Practical functional Javascript
Mostly adequate guide to FP (in javascript)
Low-code programming for event-driven applications
A high quality UI Toolkit built on Vue.js 2.0
String validation