Best Free Open-Source JavaScript Software

Fast, modern site generator built on React and GraphQL

Data-driven documents with SVG, Canvas, and HTML

The React Framework for Production

Modern copy to clipboard solution without Flash

Build fast, content‑focused websites with a modern, component‑first framework.

React Framework for building internal tools, admin panels, dashboards & B2B apps

Fast JavaScript runtime, bundler, test runner, and package manager

Build scalable JavaScript applications with ease

Web scraping and crawling made easy

A powerful, customizable JavaScript calendar for modern web apps

Fast and flexible 2D WebGL renderer

An opinionated code formatter.

Powerful data-fetching and caching for React apps

Interactive charting and data visualization library

Real-time communication for every platform

Calendar components for React Native

3D globes and maps in the browser

Find unused files, dependencies and exports in your JavaScript and TypeScript projects

Performant, flexible form handling for React with minimal re-renders

Simple and fast JSON database

Pure Javascript OCR for more than 100 Languages

A fully customizable JavaScript calendar library for modern web applications.

JavaScript Gantt chart library for React, Angular, and Vue