Open source. Open possibilities.

OpenUI is a full-stack, renderer-agnostic Generative UI framework built around OpenUI Lang, a compact streaming-first language that lets AI models generate structured UI with up to 67% fewer tokens than JSON.

A dependency-free JavaScript module for slicing decoded audio in the browser, applying fades, and encoding the result as 16-bit PCM WAV.

Anime.js is a fast, lightweight JavaScript animation library with a powerful API for animating CSS properties, SVG, DOM attributes, and JavaScript objects.

Vue 2 is a progressive JavaScript framework for building user interfaces. It reached End of Life on December 31, 2023 and no longer receives features, updates or fixes. New projects are directed to Vue 3 (vuejs/core); the repository remains available through existing distribution channels.

A lightweight, privacy‑first JavaScript/TypeScript SDK for tgram‑analytics. Zero dependencies, under 2 KB gzipped, TypeScript‑first, SPA‑ready, respects Do Not Track, supports batching and multi‑value properties.

PlayCanvas is an open-source 3D game engine for browsers, supporting WebGL2/WebGPU, XR, physics, and glTF assets. Ideal for games, visualizations, and interactive apps.

fQuery is a lightweight JavaScript library providing a chainable API for DOM querying, manipulation, events, animations, and AJAX requests.

Phaser is a fast, free, and open-source HTML5 2D game framework for desktop and mobile web browsers, supporting both Canvas and WebGL rendering.

A collection of handy online tools for developers and IT professionals, designed with a focus on great user experience.

A collection of front-end visual effect cases (Vue version) featuring over a hundred examples including CSS animations, Canvas, Three.js 3D, and AI applications, with a corresponding React version available.

flub.js is a tiny DOM microframework with reactive signals, no virtual DOM or compiler, and typed component factories for building browser applications.

mo · js is a fast, retina-ready, modular JavaScript motion graphics library for the web. It offers a declarative API with built-in components like Html, Shape, Swirl, Burst, and Stagger for creating delightful web animations.

Lodash is a modern JavaScript utility library delivering modularity, performance, and extras for array, object, string, and function manipulation.

htmx is a small, dependency-free JavaScript library that lets you issue AJAX requests, use CSS transitions, WebSockets and Server Sent Events directly from HTML attributes, enabling hypertext-driven interfaces without heavy frontend frameworks.

TypeScript is a superset of JavaScript that adds optional static types and compiles to standards-based JavaScript, helping developers build and maintain application-scale code across any browser, host, or OS.

Prettier is an opinionated code formatter that parses code and reprints it with consistent rules, taking maximum line length into account and wrapping when needed. It can run in editors on save, pre-commit hooks, or CI.

A modified web browser built with Electron for responsive web development. It mirrors interactions across multiple device previews simultaneously, includes 30+ built-in device profiles, a unified elements inspector, one-click screenshots, and hot reloading. It also ships a built-in MCP server so AI coding agents can drive the app to visually verify responsive layouts.

Docusaurus is an easy-to-maintain static site generator for open source documentation websites, with docs, blog, i18n, and customization features.

Dropzone is a JavaScript/TypeScript library that turns any HTML element into a drag-and-drop file upload area, with image previews, progress bars, chunked uploads and S3 multipart support.

bpmn-js is an open-source JavaScript toolkit for viewing and editing BPMN 2.0 diagrams directly in the web browser. It provides a rendering engine and interactive modeler capabilities, allowing developers to integrate business process modeling features into web applications.