JavaScript is a dynamic, high-level, and interpreted programming language that is essential for web development, allowing developers to build interactive and responsive user interfaces. Primarily executed on the client-side in web browsers, JavaScript enables the creation of rich user experiences through the manipulation of HTML, CSS, and DOM elements. It's also widely supported by server-side environments like Node.js, expanding its use beyond the browser. Key features include first-class functions, closures, and prototype-based inheritance, which empower developers to write both functional and object-oriented code. With its extensive ecosystem of libraries and frameworks such as React, Angular, and Vue.js, JavaScript provides tools for efficient handling of complex applications. Its asynchronous capabilities, through constructs like Promises and the async/await syntax, offer solutions for handling operations like API calls and data fetching, vital for modern web applications.
View the most prominent open source JavaScript projects in the list below. Click on a specific project to view its alternative or complementary packages. Make comparisons and find the best package for your app.
- freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.☆455,223Updated this week
- Curated list of project-based tutorials☆282,601Updated this week
- The library for web and native user interfaces.☆249,657Updated this week
- This is the repo for Vue 2. For Vue 3, go to https://github.com/vuejs/core☆212,067Oct 10, 2024Updated last year
- 📝 Algorithms and data structures implemented in JavaScript with explanations and links to further readings☆196,658Jul 26, 2026Updated last month
- A book series (2 published editions) on the JS language.☆184,835Feb 15, 2026Updated 6 months ago
- The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.☆174,747Updated this week
- JavaScript Style Guide☆148,185Apr 16, 2026Updated 4 months ago
- Coding articles to level up your development skills☆128,994Updated this week
- Build cross-platform desktop apps with JavaScript, HTML, and CSS☆122,935Updated this week
- Node.js JavaScript runtime ✨🐢🚀✨☆121,182Updated this week
- 免费的计算机编程类中文书籍,欢迎投稿☆118,762Jul 29, 2026Updated last month
- JavaScript 3D Library.☆115,280Updated this week
- TypeScript is a superset of JavaScript that compiles to clean JavaScript output.☆110,988Updated this week
- Promise based HTTP client for the browser and node.js☆109,233Updated this week
- High performance self-hosted photo and video management solution.☆113,643Updated this week
- A modern runtime for JavaScript and TypeScript.☆108,400Updated this week
- ✅ The Node.js best practices list (July 2026)☆105,612Jun 15, 2026Updated 2 months ago
- Deliver web apps with confidence 🚀☆101,019Updated this week
- 24 Lessons, 12 Weeks, Get Started as a Web Developer☆96,636Aug 5, 2026Updated last month
- A Collection of application ideas which can be used to improve your coding skills.☆97,408Oct 11, 2025Updated 10 months ago
- Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one☆95,919Updated this week
- Clean Code concepts adapted for JavaScript☆94,766Jul 29, 2024Updated 2 years ago
- Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.☆95,813Updated this week
- Storybook is the industry standard workshop for building, documenting, and testing UI components in isolation☆91,043Updated this week
- Generation of diagrams like flowcharts or sequence diagrams from text in a similar manner as markdown☆90,165Updated this week
- A curated awesome list of lists of interview questions. Feel free to contribute!☆84,418Jul 29, 2024Updated 2 years ago
- A progressive Node.js framework for building efficient, scalable, and enterprise-grade server-side applications with TypeScript/JavaScrip…☆76,614Updated this week
- A collection of awesome things regarding React ecosystem☆74,530Updated this week
- 🗂 The essential checklist for modern web development, for humans and AI agents☆74,058Aug 14, 2026Updated 3 weeks ago
- 🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first.☆73,092Updated this week
- JavaScript animation engine☆72,729Aug 21, 2026Updated 2 weeks ago
- Fast, unopinionated, minimalist web framework for node.☆69,458Updated this week
- Simple HTML5 Charts using the <canvas> tag☆67,686May 27, 2026Updated 3 months ago
- 📜 33 JavaScript concepts every developer should know.☆66,518Aug 2, 2026Updated last month
- uBlock Origin - An efficient blocker for Chromium and Firefox. Fast and lean.☆67,659Updated this week
- Delightful Node.js packages and resources [BECAUSE OF TOO MUCH SPAM AND LOW-QUALITY SUBMISSIONS, SUBMISSIONS ARE PAUSED TEMPORARILY]☆66,738Sep 2, 2026Updated last week
- A bundler for javascript and friends. Packs many modules into a few bundled assets. Code Splitting allows for loading parts of the applic…☆65,963Updated this week
- Easy to maintain open source documentation websites.☆66,203Updated this week
- Bidirectional and low-latency communication for every platform☆63,210Updated this week