Open-source alternatives to Op Components

Ant Design is an enterprise-grade component library and design system framework built for developing complex, data-heavy web applications. It provides a comprehensive collection of pre-built, state-driven interface elements that map data properties to rendered components, ensuring consistent interaction patterns and visual language across large-scale projects. The library distinguishes itself through a robust styling architecture that utilizes design tokens and hierarchical configuration providers to propagate global settings like themes, locale, and layout direction. By employing component-l

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Ariakit is a headless component library and accessible UI component toolkit. It provides a set of unstyled web components with built-in accessibility patterns to ensure that screen readers and keyboard navigation function correctly. The project includes an adaptive color engine that calculates high-contrast text and dynamic surface colors for light and dark modes. It also features a concentric layout engine for computing nested padding, margins, and border radii for circular interface elements, alongside a design token system for managing global CSS variables. The toolkit covers broad capabi

Atomico a micro-library for creating webcomponents using only functions, hooks and virtual-dom.

AXA CH UI component library. Please share, comment, create issues and work with us!

For the end-user documentation, click here. This project made with LitElement and based on a modified version of the LitElement TypeScript starter.

Custom Element Wrapper for Stripe.js v3 Elements

Atoms for Blaze UI

A collection of accessible, free, open-source web components for building Brightspace applications.

This project is a community-maintained open source directory that serves as a comprehensive index of React components and libraries. It functions as a technical knowledge base, mapping common development challenges to vetted third-party solutions to help developers accelerate their frontend workflows and avoid reinventing standard interface elements. The directory distinguishes itself through a decentralized, hyperlink-centric architecture that avoids hosting code locally, instead pointing users directly to external repositories. This content is curated through a collaborative model where com

Chakra UI is a design system component library and styling framework that provides a foundation for building consistent, accessible web interfaces. It functions as a centralized theme configuration engine, using a design-token-driven architecture to manage visual properties like color palettes and spacing rules as a single source of truth across an entire application. The framework distinguishes itself through a type-safe styling utility that automatically generates TypeScript definitions from theme configurations, ensuring accurate property referencing and editor autocompletion. It employs a

🧬 Progressive Web Components.

Collection of Web Components by Clever Cloud

React hooks implementation of Google's Thanos easter egg

Yew components, based on PatternFly:

Components for interactive scientific writing, reactive documents and explorable explanations.

Swagger UI for MCP servers — explore, test, and visualize any Model Context Protocol server with rich components (charts, tables, pipelines). No LLM required.

⚡️ Useful pipes for Angular with no external dependencies!

🌟 DataFormsJS 🌟 A minimal JavaScript Framework, standalone React and Web Components, and JSX Compiler for rapid development of high quality websites and single page applications.

React-bits is a comprehensive toolkit for web development that combines a library of interactive motion primitives with a command-line interface for component management and AI-assisted coding. It provides a framework for implementing declarative motion states and specialized typography animations, allowing developers to build responsive, gesture-enabled interfaces that respond to user input. The project distinguishes itself through a remote registry system that allows for the direct injection of modular UI source code into local project directories. It also features a protocol-based bridge t

htm is a build-less markup engine and JavaScript template parser that transforms template literals into element creation calls or structured objects during runtime. It serves as a hyperscript HTML template library and a utility for generating markup compatible with virtual DOM libraries. The library allows for the creation of HTML-style markup using standard JavaScript tagged template literals, removing the requirement for an external transpiler or build-step compiler. It distinguishes itself by mapping template strings to custom functions that transform types and properties into specialized

AnywhereUI is a collection of rich web components that includes framework bindings, created with StencilJS