Top COMPONENT GitHub Repositories & Tools (2026)

Percy's Storybook SDK.

Adyen Android Drop-in and Components

Mayu is a live updating server-side component-based VDOM rendering framework written in Ruby

💎 An accessible, theme-ready design system built for learning applications and Open edX.

Carbon Design System SVG pictograms as Svelte components

Build a Calendar By Pure SwiftUI

A simple and powerful entity component system (ECS) written in C++17

HAX + CMS to manage your microsite universe with PHP backend

Android source code of the most popular Paleontological mobile app in the world! Programming sandbox.

Backpack Design System

Generic Linked Data browser and UX component framework. Apache license.

A library for using FluentValidation with Blazor EditForm components. Provides seamless integration between FluentValidation and Blazor forms with support for real-time validation, nested objects, async validation, and rule sets.

Out-of-the-box Lynx Component Library

Radzen Blazor is the most sophisticated free UI component library for Blazor, featuring 145+ native components including DataGrid, Scheduler, Charts, and advanced theming with full support for Material Design and Fluent UI. If Radzen Blazor is useful to you, a ⭐ on GitHub helps other Blazor developers find it.

Control your children's Android devices through Google Family Link directly from Home Assistant. Monitor screen time, set daily limits, manage bedtime and school schedules, and grant bonus time - all from your dashboard.

Web Components for building declarative, graphical web apps

Home Assistant custom integration for tracking and managing maintenance tasks with adaptive scheduling, sensor-based triggers, and notifications

A web component for visual art and creative coding

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

Zero-initial-JS selective activation engine. Turn server-rendered HTML into instant interactivity on intent.