Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.
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Agent skills that give coding agents taste: art direction, reference images and a browser check instead of generic AI pages
A toolchain for building scalable, enterprise-ready component systems on top of TypeScript and Web Component standards. Stencil components can be distributed natively to React, Angular, Vue, (+ more) and traditional web applications from a single, framework-agnostic codebase.
Free Tailwind CSS v4 components for your next project, designed to enhance your web development with the latest features and styles 🚀
Material Design Web Components
Unstyled UI components for building accessible web apps and design systems. From the creators of Radix, Floating UI, and Material UI.
React Native UI library built on the Eva Design System: 30+ themeable, accessible components for iOS, Android and web. TypeScript, React 19 / RN 0.81, Eva and Material themes with runtime light/dark switching, on-demand style compilation.
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.
Build material design interfaces in record time... without stress for devs... 🍺💛
A set of beautifully-designed, accessible components and a code distribution platform. Works with Go and templ. Open Source. Open Code.
💫 HTML on circles. A CSS layout system for radial UIs: gauges, dials, knobs, radial menus, charts and watch faces.
A set of high-quality standards based web components for enterprise web applications. Part of Vaadin 20+
PatternFly Elements. A set of community-created web components based on PatternFly design.
Siemens Industrial Experience is a design system for designers and developers, to consistently create the perfect digital experience for industrial software products.
A monorepo containing the packages for Esri's Calcite Design System
Unofficial Claude Skill derived from the book Refactoring UI — a design rulebook and diagnostic layer for web UI. 151 tracked rules, design token generation, and Tailwind mappings.
User Interface Component Library based on LitElement / lit-html
Ignite UI for Web Components is a complete library of UI components, giving you the ability to build modern web applications using encapsulation and the concept of reusable components in a dependency-free approach.
Astro UXDS is a collection of guidelines, patterns and components for designing space-based user interface applications.
Red Hat's Design System
Tooling infrastructure for modern web component development.
‹B› Web components, classes, and utilities for creating single-page PWAs – built with Lit by Blackstone Publishing
The UI SDK and agent-ready developer toolkit for AI factories, robotics, and autonomous vehicles.
Components for Lyne Design System