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A little curiosity. A world of open source.
THE FIRST COLLECTIONPriceline Design System is Priceline.com's open-source UI component library and design standard. It aims to unify interface patterns, speed design and development, and promote accessibility, internationalization, and responsive web design. It ships as the npm package pcln-design-system with Storybook docs and an MIT license.
Build production-ready conversational AI apps in Python quickly. Supports tools like OpenAI, LangChain, and more. Community-maintained since May 2025.
MahApps.Metro is a UI toolkit for WPF that restyles standard controls with a modern Metro look, adds window chrome, theming, dialogs, and navigation controls without requiring control replacement.
A Svelte 5 UI component library inspired by Vercel's Geist, aimed at helping developers build cohesive and consistent web experiences. It ships with an online documentation site and is released under the MIT license.
Recharts is an open-source chart library for React built on D3. It offers declarative, composable chart components rendered as native SVG with minimal dependencies, installable via npm, Deno or a UMD script tag, and documented with a storybook.
Material Design for Bootstrap is a free UI kit offering 700+ components, themes, and templates for building responsive, mobile-first websites. Available for jQuery, Angular, React, and Vue under MIT license.
Portainer is a lightweight service delivery platform providing a GUI and API to manage Docker, Swarm, Kubernetes, and ACI environments.
CompoMo (@ds-mo/ui) is a framework-agnostic Stencil.js web component library styled with TokoMo design tokens, shipping generated Angular, React and Vue adapters alongside an MCP metadata server.
Radix Themes is an open-source React component library focused on fast development, easy maintenance and accessibility, maintained by WorkOS. The README points to full documentation, release notes, contributor guidelines, community channels and its MIT license.
Kivy is an open-source Python framework for developing cross-platform GUI applications for desktop, mobile, and embedded platforms.
PlayCanvas PCUI is an MIT-licensed UI component library for web tools, offering fully styled components, React wrappers, observer-based data binding, Storybook examples, font theming, and UMD bundle support.
Zag provides headless, framework-agnostic state machines for accessible JavaScript UI components, with adapters for React, Solid, Vue and Svelte and unstyled APIs for building your own design system.
Open WebUI is a self-hosted, extensible AI platform that provides a user-friendly interface for local and cloud-based models, supporting Ollama and OpenAI-compatible APIs.
ZenUI Library React is an open-source UI component library built with React and Tailwind CSS. It offers 800+ components, 20+ templates, 100+ animated components, 500+ icons and color tools, and is used by copying code snippets into your project.
Gradio is an open-source Python library for quickly building and sharing web applications for machine learning models, APIs, or any Python function without requiring web development experience.
Mirotone React is a component library for the Mirotone Design System, providing a set of React components and utilities to accelerate development for Miro.
Ark UI is a headless, unstyled component library from the Chakra UI team, offering 45+ accessible UI primitives built on Zag.js state machines with the same API across React, Solid, Vue and Svelte.
Vuetify is an MIT-licensed Vue UI component framework offering handcrafted, responsive components with theming, SASS customization, Vite tree-shaking and 42+ language support.
@alifd/next is Alibaba Fusion's configurable React component library for enterprise backend (mid/back-office) systems. It pairs with Fusion Design theme packages so designers and developers share one visual source, and supports npm or browser installs plus per-module imports.
Nuxt UI is a Vue and Nuxt component library built on Reka UI, Tailwind CSS and Tailwind Variants, offering accessible, themeable interface components plus official starter, landing, docs, SaaS, dashboard, chat and other templates under the MIT license.
