We're rebuilding and open-sourcing the worldβs software from scratch.
Agent skill to reverse engineer a SaaS product through the browser into a knowledge base for rebuilding it: screens, rules, data model, design tokens and production barriers, without touching production data.
A professional front-end template for building fast, robust, and adaptable web apps or sites.
The largest open-source library of animated, interactive, and customizable React & Next.js components for building standout web products and experiences. Built for humans and AI agents.
Shared data types for building collaborative software
Full featured HTML framework for building iOS & Android apps
:fire: An extremely fast, React-like JavaScript library for building modern user interfaces
A declarative, HTML-based language that makes building web apps fun
Modular SenseNova skills for building AI-powered office assistants and productivity workflows
Find related notes and excerpts while writing. Your link building copilot displays relevant content in graph + list view. A local embedding model powers semantic search. Zero setup. No API key.
An agent skill for building premium, immersive, scroll-driven websites. Works with Codex, Claude Code, and other coding agents. Also available as a Claude Code plugin.
Curated lessons on getting started building agents with Copilot Studio
An HTML5, jQuery-based widget library for building modern web apps.
A practical guide to building enterprise AI agents across their full lifecycle.
The source for the Firebase codelab for building a cross-platform chat app
GOV.UK Frontend contains the code you need to start building a user interface for government platforms and services.
React component for building accessible menu, dropdown, submenu, context menu, and more
A web framework for building multi-user virtual reality experiences.
A micro-library of stream components for building custom JSON and JSONC processing pipelines with a minimal memory footprint β parse, filter, and transform JSON far larger than available memory with a SAX-inspired token API, on Node.js or Web Streams.
A plugin marketplace for GitHub Copilot and other AI agents that provides Power Platform development plugins, including reusable skills, agents, and commands for building and deploying solutions.
β A step-by-step complete beginner example/tutorial for building a Todo List App (TodoMVC) from scratch in JavaScript following Test Driven Development (TDD) best practice. π±
Overture is a powerful JS library for building really slick web applications, with performance at, or surpassing, native apps.
Xel - Widget toolkit for building native-like Electron and Web apps
NHS.UK frontend contains the code you need to start building user interfaces for NHS websites and services.
The ultimate collection of APIs for building autonomous AI agents β 2,036 production-ready APIs across Agents, AI Models, and MCP Servers. Stop wasting weeks building infrastructure. Plug these in and ship your agent today.
Understand React Server Components and Server Actions by building a framework with them.
ε₯½η¨η Canvas εΌζοΌθ½»ζΎζε»Ίε―δΊ€δΊγε―ηΌθΎηεΎε½’εΊη¨οΌAI ζΆδ»£ηζ ιη»εΈεΌζγAn easy-to-use Canvas engine for building interactive and editable graphics applications β an infinite canvas engine for the AI era.
The local-first operating system for building, running, and improving AI agents, workflows, and autonomous goals.
Codex skill for building responsive 3D photo flipbook websites from user-supplied images
This English learning platform for Chinese users combines top-down FPS extraction gameplay with a Word Card system. Players explore maps, fight enemies, loot supplies, and escape. Word Cards found in matches build word networks; reviewing them upgrades cards. Character progression and base-building both require card mastery.
Component layer for AI agents: implementation-aware contracts for building project-native interface components.
A visual workspace for game narratives and NPCs. Build worlds, arrange scenes and characters, edit branching dialogue, review AI drafts, and rehearse stories. Collaborate with your own AI through bilingual Skills.
Codex skill for building and delivering student portfolio and personal resume websites
A local-first desktop workspace for worldbuilding, game narrative, quests, maps, relationships, novels, scripts, and AI-assisted writing.
Capx Casa β the open control plane for building a company from your terminal
Open-source bilingual resume autofill agent for verified profile building, recruitment form completion, attachment preparation, and reviewed drafts.
Reusable Codex skill for building and validating DeepSeek Harness and Cordis plugins
A comprehensive, curated guide to the best free-forever and generous free-tier services for building, deploying, and scaling applications in 2026.
A pluginized microkernel architecture for building, orchestrating, and extending multi-agent systems in DeepSeek Harness.
Codex skill for diagnosing photos, choosing desktop-pet modes, guiding private asset generation, validating results, and building Windows/macOS Electron pets.
A graph-native simulation engine for building composable engineering simulations and digital twins.
A minimal starter template for building on Quantova, read chain state, deploy QAsset contracts to the QVM, and send signed transactions through the gateway
Open-source software for building a neobank. Product screens, a 181-operation banking API, a double-entry ledger and a canonical stablecoin FX engine. MIT licensed, self-hostable, runs on Node or Cloudflare Workers.