424.6k
FreeCodeCamp
freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.
🎓
Learning & Career🌐
Web🟡
JavaScript👨💻
Development
Best Open-Source JavaScript Tools in 2026
This directory lists open-source JavaScript libraries and utilities. Nanoid generates tiny, URL-friendly unique string IDs. Babel compiles next-generation JavaScript for older environments, and AG Grid provides a data table with React, Angular, Vue, and plain JavaScript support.
The most popular open-source JavaScript tool by GitHub stars is FreeCodeCamp(424.6k stars), followed by React(244.4k stars)and JavaScript Algorithms(195.8k stars). This page lists the top 30 of 119 javascript tools in the directory, ranked by community adoption.
Quick comparison
| # | Tool | Stars | Language | License |
|---|---|---|---|---|
| 1 | FreeCodeCamp freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free. | 424.6k | TypeScript | BSD 3-Clause "New" or "Revised" License |
| 2 | React The library for web and native user interfaces, enabling the creation of complex, interactive UIs with a component-based approach. | 244.4k | JavaScript | MIT License |
| 3 | JavaScript Algorithms A comprehensive collection of algorithms and data structures implemented in JavaScript, complete with explanations and additional reading links. | 195.8k | JavaScript | MIT License |
| 4 | 30 Seconds of Code A collection of coding articles and snippets that help you enhance your development skills quickly and efficiently. | 123.1k | JavaScript | Creative Commons Attribution 4.0 International |
| 5 | Electron Build cross-platform desktop apps using JavaScript, HTML, and CSS with Electron, integrating web technologies into native desktop applications. | 120.8k | C++ | MIT License |
| 6 | Node.js High-performance JavaScript runtime that enables scalable server-side development, real-time applications, and enterprise-grade systems. | 116.7k | JavaScript | MIT License |
| 7 | D3 Bring data to life with SVG, Canvas, and HTML. D3.js helps you create dynamic, interactive data visualizations in web browsers using a powerful toolset with a rich ecosystem. | 112.7k | Shell | ISC License |
| 8 | Deno A modern and secure runtime for JavaScript and TypeScript with built-in support for TypeScript. | 106.4k | Rust | MIT License |
| 9 | Puppeteer A Node library providing a high-level API to control headless Chrome or Firefox browsers over the DevTools Protocol. | 94.1k | TypeScript | Apache License 2.0 |
| 10 | Bun Bun is an incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one tool. | 89.0k | Zig | Other |
All 30 JavaScript tools
- 244.4k
React
The library for web and native user interfaces, enabling the creation of complex, interactive UIs with a component-based approach.
👨💻 Development🟡 JavaScript🌐 Web🧰 Framework - 195.8k
JavaScript Algorithms
A comprehensive collection of algorithms and data structures implemented in JavaScript, complete with explanations and additional reading links.
👨💻 Development🎓 Learning & Career🟡 JavaScript🔬 Data Science - 123.1k
30 Seconds of Code
A collection of coding articles and snippets that help you enhance your development skills quickly and efficiently.
👨💻 Development🟡 JavaScript🕶️ Awesome🎓 Learning & Career - 120.8k
Electron
Build cross-platform desktop apps using JavaScript, HTML, and CSS with Electron, integrating web technologies into native desktop applications.
👨💻 Development🧰 Framework💻 Desktop🟡 JavaScript - 116.7k
Node.js
High-performance JavaScript runtime that enables scalable server-side development, real-time applications, and enterprise-grade systems.
🟡 JavaScript👨💻 Development🛠️ Tools - 112.7k
D3
Bring data to life with SVG, Canvas, and HTML. D3.js helps you create dynamic, interactive data visualizations in web browsers using a powerful toolset with a rich ecosystem.
📈 Visualization🟡 JavaScript🌐 Web - 106.4k
Deno
A modern and secure runtime for JavaScript and TypeScript with built-in support for TypeScript.
👨💻 Development🟡 JavaScript💚 Node.js - 94.1k
Puppeteer
A Node library providing a high-level API to control headless Chrome or Firefox browsers over the DevTools Protocol.
👨💻 Development🧪 Testing🔌 Browser Extension🟡 JavaScript - 89.0k
Bun
Bun is an incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one tool.
👨💻 Development🟡 JavaScript💚 Node.js🛠️ Tools - 79.8k
Vite
Next generation frontend tooling for rapid and efficient web development. It's fast and developer-friendly!
👨💻 Development🌐 Web🛠️ Tools🟡 JavaScript - 72.8k
Awesome React
A curated collection of awesome resources related to the React ecosystem, providing tools, libraries, tutorials, and more.
🕶️ Awesome⚛️ React🟡 JavaScript Our Newsletter
Get new JavaScript tools right in your inbox
Get short emails with useful javascript projects, releases, and repos worth watching.
- 71.8k
Strapi
🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first.
📝 CMS🟡 JavaScript🔷 TypeScript - 67.1k
Anime
Anime is a JavaScript animation engine designed to create complex, beautiful animations with ease.
🏃♂️ Animation🟡 JavaScript🌐 Web - 66.3k
33 JavaScript Concepts
📜 A comprehensive guide to 33 JavaScript concepts every developer should know. This resource aims to deepen JavaScript expertise with essential concepts.
🎓 Learning & Career🟡 JavaScript👨💻 Development - 66.1k
ECharts
Apache ECharts is a powerful, interactive charting and data visualization library for the browser, providing a wide range of chart types and features for beautiful data representation.
📈 Visualization🌐 Web🟡 JavaScript - 65.8k
Webpack
A versatile bundler for JavaScript and its friends, facilitating the bundling of modules into a few assets. Supports code splitting for on-demand loading and features loaders for handling various module formats like CommonJs, AMD, ES6, CSS, images, and more.
👨💻 Development🟡 JavaScript🛠️ Tools🏎️ Performance - 48.6k
Dayjs
Day.js is a 2kB immutable date-time library, providing a modern API as a lightweight alternative to Moment.js.
👨💻 Development🟡 JavaScript🔨 Utils - 45.3k
Jest
Delightful JavaScript testing framework with a focus on simplicity.
🧪 Testing🟡 JavaScript💚 Node.js - 44.5k
ReactJS Interview Questions
A comprehensive list of the top 500 ReactJS Interview Questions & Answers, preparing you for technical interviews.
🎓 Learning & Career🟡 JavaScript⚛️ React - 44.2k
TanStack Query
A powerful library for asynchronous state management and server-state utilities with data fetching capabilities for web applications, supporting TS/JS, React Query, Solid Query, Svelte Query, and Vue Query.
👨💻 Development💫 State🛠️ Tools🟡 JavaScript - 43.9k
Babel
Babel is a powerful JavaScript compiler that allows developers to use next-generation JavaScript, converting it into a syntax compatible with older environments.
👨💻 Development🟡 JavaScript🛠️ Tools - 41.5k
Yarn
A fast, reliable, and secure dependency management tool for JavaScript with features like offline mode and deterministic installs.
👨💻 Development🟡 JavaScript🛠️ Tools - 41.3k
Hexo
A fast, simple, and powerful open-source blog framework powered by Node.js, designed for creating and deploying static sites with ease.
📝 CMS🌐 Web🟡 JavaScript🧰 Framework - 36.5k
Date-fns
⏳ A modern JavaScript date utility library that provides comprehensive, lightweight functions for date manipulation.
🔨 Utils🟡 JavaScript👨💻 Development - 36.4k
Typeorm
TypeORM is an advanced ORM for TypeScript and JavaScript that provides support for major SQL databases including MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, SAP Hana, and WebSQL. It enables developers to work with databases in both server-side (Node.js) and client-side environments, offering a seamless experience in browsers, Ionic, Cordova, and Electron platforms.
💾 Database👨💻 Development🔷 TypeScript🟡 JavaScript - 36.1k
Lerna
Lerna is a fast, modern build system for efficiently managing and publishing multiple JavaScript/TypeScript packages from a single repository.
👨💻 Development📦 Version Control🟡 JavaScript🔷 TypeScript - 33.0k
JavaScript
Comprehensive collection of algorithms and data structures implemented in JavaScript, designed for beginners and following best practices.
🎓 Learning & Career🟡 JavaScript👨💻 Development - 32.5k
Floating-ui
A JavaScript library to position floating elements and create interactions for them, providing powerful utilities for popper and tooltip positioning.
👨💻 Development🟡 JavaScript🛠️ Tools - 31.7k
Editor.js
A versatile block-style editor with a focus on clean JSON output, perfect for creating rich, structured content.
👨💻 Development📚 Documentation🛠️ Tools🟡 JavaScript
Frequently asked questions
What is the best open-source javascript tool in 2026?
FreeCodeCamp leads by GitHub stars(424.6k). freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.
Are these javascript tools free?
Yes. Every tool on this list is open source and free to use in your own projects. Many can be self-hosted.
How is this list ranked?
Tools are ranked by GitHub star count, a strong proxy for community adoption and active maintenance. Star counts are refreshed regularly.
Stay Updated!
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