Design Systems GitHub Repositories (2026) · Open Source Tools

The 1st Collaborative AI Design Agent Workspace. Local-first and open source. Create motion, prototypes, websites, apps, dashboards, presentations, images, and videos with your team and AI agents. Share work, exchange feedback, and iterate together in one workspace.

Open-source, AI-assisted UI design review for coding agents. Inspect screenshots, scope code changes and compare results in a local workbench. Alpha.

🌼 🌼 🌼 🌼 🌼  The most popular, free and open-source Tailwind CSS component library

Component layer for AI agents: implementation-aware contracts for building project-native interface components.

RYUX gives AI agents the design intelligence to understand product context, make intentional design decisions, and evaluate what they create.

Describe what you need — a presentation, lesson, or story — and let the AI build clean, beautiful HTML slides for you. Local-first. Works offline. Works for you.

An open source prototype sandbox for designers and product managers who build.

Microsoft Fluent UI Blazor components library. For use with ASP.NET Core Blazor applications

An enterprise-class UI design language and React UI library

Storybook is the industry standard workshop for building, documenting, and testing UI components in isolation

Build your design system in React, Solid, Vue, Svelte or Vanilla. Powered by finite state machines

A collection of libraries and tools that help you build adaptive, accessible, and robust user experiences.

Visual builder for React. Build apps, websites, and content. Integrate with your codebase.

A build system for creating cross-platform styles.

Design with JSX, powered by your own component library.

Helios Design System

Design system library by pixiv

Salesforce Lightning Design System for React

Culture Amp's Kaizen Design System :seedling:

Offline MCP server for Basecoat UI (shadcn/ui look, no React): templates, macro layouts, theming/dark-mode contract, static validation.