01Open source
Repos
Open-source repos worth knowing, by the problem they take on.
Web & Frontend
robot-heads
Provides animated 3D robot heads in React on 2D canvas showing agent states like thinking, useful now for dependency-free chatbot and AI interfaces.
Design System React
Implements Salesforce Lightning Design System in React 19 with TypeScript, SLDS 2, dark mode, and accessibility.
frosty
Creates a mobile Twitch client for iOS and Android supporting emotes from 7TV, BTTV, and FFZ, valuable now for enhanced Flutter-based streaming viewers.
Elementary UI
Enables SwiftUI-style declarative apps in the browser via WebAssembly with reactivity and tiny Embedded Swift binaries.
mygo
Builds desktop apps in Go using webview frontends like WKWebView or native GPU UI with generated TypeScript clients for single binary distribution.
Beam
A tiny, teachable WebGPU library that exposes the real WebGPU API through five nouns and two verbs with first-class TypeScript types.
Viewi
A front-end framework that compiles PHP components into reactive browser apps, worth exploring if you want to build interactive web UIs without leaving PHP.
hairline
A dependency-free ESM library that renders isometric line figures responding to pointer movement, usable with React or any DOM-based app.
Quickdraw
An MIT-licensed infinite-canvas whiteboard SDK that embeds a complete drawing surface into React, React Native.
Coi
A type-safe, component-based language that compiles to WebAssembly for building reactive web apps.
GoatDB P2P Database
GoatDB is an embedded, distributed, peer-to-peer document database for realtime state sharing across humans, agents, tools, and devices. It is notable for its TypeScript-first design, React hooks, and verifiable state continuity.
Amaze File Manager
AmazeFileManager is an open-source Android file manager with a Material Design interface and features like tabbed browsing, root explorer, and AES encryption. It is notable for being lightweight and supporting cloud services and app management.
AI Whiteboard Animator
cs-board is a local AI workbench that generates whiteboard animation videos from reference audio and Chinese text. It is notable for integrating voice cloning, illustration, animation, subtitles, and export into one offline tool.
Pinme Frontend Deployment
PinMe is a zero-config CLI for creating and deploying full-stack projects with frontend, Worker backend, and database in one command. It is notable for supporting Claude Code Skills and simplifying full-stack delivery.
Pegasus Game Frontend
Pegasus is a cross-platform graphical frontend for browsing game libraries and launching emulators from one place. It stands out for customizability, high performance, and support for embedded devices.
Angular Example App
angular-example-app is a beginner-friendly, production-ready Angular 21 starter demonstrating CRUD, authentication, i18n, lazy loading, and signals. It is notable as a real-world learning reference for modern Angular best practices.
Watermark JS Plus
watermark-js-plus is a lightweight, framework-agnostic browser watermark library supporting text, image, rich-text, and blind watermarks. It is notable for tamper protection, decoding, and working across vanilla JavaScript and frontend frameworks.
PO Angular
po-ui/po-angular is a UI component library for Angular, developed in Portuguese by Po Tech. It is notable as a solid, enterprise-focused toolkit that streamlines building business applications with Angular.
Activist Platform
activist-org/activist is an open-source platform designed to make activism easier and safer by connecting people with organizations and campaigns. It is notable for its community governance model, strong focus on accessibility, and secure hosting.
Speckle Server
specklesystems/speckle-server is a monorepo containing the server, frontend, and 3D viewer for Speckle, a data hub for architecture, engineering, and construction (AEC) tools. It is notable for enabling data exchange across fragmented AEC software.
Vue Visualization Collection
hepengwei/visualization-collection-vue is a collection of over 100 frontend visual effect examples built with Vue, including CSS animations, Canvas, Three.js 3D, and AI applications. It is useful for developers learning or exploring frontend animation techniques.
osu! Web
ppy/osu-web is the browser-facing frontend for the osu! rhythm game, built as a production Laravel application. It is notable as a real-world example of a large-scale Laravel codebase powering a popular game's web services.
ngx-spinner
Napster2210/ngx-spinner is an Angular library offering over 50 customizable loading spinner animations, supporting Angular versions 4 through 22. It is notable for its maturity, extensive feature set like HTTP interceptors, and a new interactive playground.
ILC Framework
namecheap/ilc is an Isomorphic Layout Composer framework for building micro frontends into a single-page application with server-side rendering and internationalization support. Its notable advantage is isomorphic page composition, blending server and client rendering.
Deco Visual CMS
Git-based visual CMS for Deno, htmx, and Tailwind applications. Offers server-side JSX, local development tunnels, and content editor UI generation from TypeScript props.
Webhook.site Testing Tool
Tool that provides instant unique URLs for testing and debugging webhooks and HTTP requests. Includes a graphical editor and scripting language for transforming and processing requests.
Tick Stock Panel
Self-hosted quant workbench for A-share stock selection, monitoring, and backtesting. Supports multi-source data routing, minute-level strategies, and an AI assistant.
Hilla Business Framework
Framework integrating Spring Boot Java backends with reactive TypeScript frontends. Provides type-safe server communication and UI components, eliminating REST boilerplate.
webapp.rs Rust Framework
Example web application written entirely in Rust using Leptos/WASM, Axum, and SQLx. Demonstrates fullstack Rust integration with server-side rendering and RPC.
KVision Web Framework
Object-oriented Kotlin/JS web framework for building web apps without HTML, CSS, or JavaScript. Provides GUI components, reactive and imperative programming, and fullstack support.
Jetpack Rspack Runner
Preconfigured Rspack-based build tool for web code. Offers zero-config dev server, production builds, hot reloading, and differential builds as a webpack alternative.
Infinite Canvas Tutorial
A tutorial for building infinite canvas applications using WebGL and WebGPU, covering high scalability, zooming, and direct manipulation. It is notable for its technical depth on a modern topic and is freshly maintained.
Visualization Collection
A collection of over a hundred frontend visual effect examples, including CSS animations, Canvas, and Three.js 3D. It serves as a useful reference for visual design but is not a standalone tool.
Inkstone Markdown Notebook
Inkstone is a self-hosted Markdown notebook application that runs entirely on Cloudflare Workers. It is notable for its novel serverless architecture and momentum in the self-hosted knowledge management space.
Farm Build Tool
Farm is an extremely fast, Vite-compatible web build tool written in Rust, designed to avoid Vite's performance issues on large projects. It is notable for bringing Rust-based build speeds to Vite-compatible workflows and is actively maintained.
Prehistoric Animal Museum
A free, open-source, bilingual 3D museum where young children can explore prehistoric animals with narration and a parent guide. It is notable as an educational 3D project, though its audience is niche.
PDFX PDF Processor
PDFx is a desktop application that provides a free-floating 2D canvas for viewing, rearranging, and combining multiple PDF files and images simultaneously. It is notable for its novel visual approach to multi-document PDF handling.
SaaS Boilerplate
SaaS Boilerplate is an open-source starter stack using React, Django, and AWS to build SaaS products faster. It is a solid, full-stack boilerplate but not specifically novel or frontend-focused.
WebGL Effects Library
VFX-JS is a JavaScript library that adds WebGL-powered shader effects to HTML elements like images and videos, with React bindings and prebuilt effects. It simplifies WebGL visual effects for frontend creative work.
JavaScript Library Creator
Rslib is a build tool for JavaScript and UI component libraries based on Rsbuild. It offers zero-config setup, semantic configurations, and integrated build/debug/document/test workflows; fresh from the rstack team.