Awesome GitHub RepositoriesCustom Elements

Vue is a progressive JavaScript framework designed for building modular, reactive user interfaces. It utilizes a component-based architecture that allows developers to encapsulate logic, templates, and styles into reusable units. At its core, the framework employs a virtual DOM renderer and a proxy-based reactivity system to synchronize application state with the document object model efficiently. What distinguishes this framework is its focus on developer experience and flexibility. It supports a single-file component format that colocalizes related concerns, alongside a powerful composition

ReDoc is an OpenAPI documentation generator that transforms OpenAPI and Swagger specifications into interactive, three-panel API reference websites. It provides a system for generating these references as standalone static HTML files or as embedded UI components for integration into existing websites and developer portals. The tool organizes API specifications into a responsive layout featuring a navigation sidebar, detailed endpoint descriptions, and language-specific code samples. It supports the visualization of complex data models by mapping schema definitions to human-readable tables and

Polymer is a custom element framework and web component library used to build reusable, encapsulated custom elements that function as native browser components. It serves as a system for defining public properties and attributes that trigger automatic state observation and updates within the DOM. The project functions as a data binding library, providing a mechanism to synchronize state between internal component properties and external models via two-way data binding. It covers the development of frontend component libraries and web component architecture, enabling the creation of modular u

This project is a framework-agnostic UI library and a collection of modular web components based on the Material Design visual system. It provides a comprehensive set of interactive interface elements and a responsive web grid system for organizing page content. The library utilizes a design token theme engine to apply consistent typography, colors, and visual styles across an interface. It separates behavioral logic from rendering to ensure that components remain compatible across different JavaScript environments. The system covers responsive layout design and web form interface developmen

This project is a web component framework and optimized web markup standard designed for high performance web development. It provides a system for building fast-loading websites using a specialized set of HTML components and scripts, complemented by a web performance validation suite to ensure markup compliance. The framework includes a dynamic HTML template engine for rendering data-driven content without full page reloads and a dedicated ad network integration framework. This integration system manages third-party advertisements with built-in viewability metrics and optimized loading seque

Shoelace is a web component UI library consisting of a suite of accessible, framework-agnostic user interface elements. It provides a collection of custom element components and reusable HTML tags that encapsulate style and behavior to work across any JavaScript framework or plain HTML pages. The system is designed as a themable UI component system, utilizing CSS variables to manage visual themes and dark mode support. This allows for the implementation of custom design systems and a consistent visual language across web environments. The library covers broader capabilities in accessible int

This project is a web component tooling system used to compile TypeScript and JSX into standard-compliant custom elements. It enables the development of framework-agnostic components that function across different browsers and frontend environments. The toolset focuses on cross-framework UI distribution, allowing a single library of components to be used in React, Angular, Vue, or plain HTML. It includes capabilities for enterprise design system engineering and generates specific wrapper code to ensure components behave as native elements within various frameworks. The system covers server-s

React is a JavaScript library for building user interfaces through the composition of modular, self-contained components. It employs a declarative programming model where developers describe the desired visual state, and the library automatically manages the underlying document updates and state synchronization. By utilizing a virtual representation of the document, it calculates and applies minimal changes to the browser, ensuring efficient rendering even in complex applications. The library distinguishes itself through a sophisticated scheduling system that manages rendering work in increme

Aurelia is a JavaScript web framework and component-based UI system used to build applications for browser, mobile, and desktop environments. It functions as a frontend application orchestrator and data binding library that synchronizes application state with the view to render dynamic content and process user input. The framework implements a component architecture that pairs logic classes with HTML templates to create reusable visual elements. It utilizes a dependency injection container to manage object lifecycles and a modular composition model that aggregates independent functional packa

LogicFlow is an SVG-based flowchart editing framework and visual graph editor used for building customizable business process diagrams. It serves as a customizable diagramming engine for rendering business process models, entity relationship diagrams, and unified modeling language charts. The system is characterized by a plugin-based architecture that allows developers to define specialized graphical elements and register pluggable modules. A distinctive feature is its overlay system, which positions standard HTML components on top of the SVG canvas to create interactive menus and control pan

Material Web is a framework-agnostic library of reusable user interface components built on native browser standards. It provides a collection of interactive elements that follow official design system specifications, enabling the creation of consistent and accessible interfaces across diverse web applications. The library utilizes custom elements and shadow DOM to ensure style encapsulation and component logic isolation. By leveraging native browser APIs, it maintains design integrity and functional consistency across all major web browsers and varying screen sizes. The project supports ent

Perspective is a columnar data analytics engine and high-performance visualization component powered by WebAssembly. It provides a system for analyzing and visualizing large or streaming datasets through interactive data grids and charts, utilizing a compiled binary to achieve near-native performance within the browser. The project distinguishes itself through a WebSocket-based data streaming interface and deep Apache Arrow integration, which minimize memory overhead when synchronizing tables between servers and clients. It acts as a remote query proxy capable of translating visualization con

Wired Elements is a hand-drawn web component library and custom element UI kit. It provides a set of low-fidelity visual building blocks designed to produce a rough, non-polished aesthetic for early-stage design iterations. The framework enables the creation of rapid UI prototypes, low-fidelity wireframes, and conceptual UX mappings. It uses a sketched appearance to help focus iterations on layout and functionality rather than final visual polish. The library utilizes SVG-based path rendering and web component encapsulation to deliver its hand-drawn style. Visual states are managed through e

html5shiv is a JavaScript compatibility polyfill and legacy browser shim that enables the use of HTML5 sectioning elements in outdated versions of Internet Explorer. It provides a compatibility layer that ensures modern HTML5 tags are recognized and rendered correctly by overriding element creation methods. The library ensures that HTML5 sectioning elements contain their child elements in old web engines by applying basic styles. It specifically addresses layout and styling discrepancies for both screen and print media to prevent layout collapse. The project includes a programmable configura

FAST is a web components framework and declarative UI library used to build adaptive user interfaces. It functions as a server-side rendering engine and design system implementation, enabling the creation of modular components based on web standards. The framework focuses on cross-framework component compatibility, allowing user interface elements to remain functional across different front-end frameworks and modern browsers. It implements a design language through a collection of pre-defined visual components to ensure consistency across professional applications. The system covers state-dr

This repository contains the HTML specification, which defines the core standards for web page structuring, content organization, and document rendering. It establishes the fundamental algorithms for state-machine-based tokenization, tree construction for the document object model, and origin-based security isolation. The specification provides a framework for defining custom elements with independent lifecycles and registries. It also details the requirements for cross-document communication, session history management, and the synchronization of interface properties with content attributes.

This project is a functional programming compiler and JavaScript transpiler that transforms a statically typed language into optimized JavaScript for web browsers. It serves as a frontend architecture framework, providing a static type system and a package manager that enforces semantic versioning. The compiler uses a type-checking engine with automatic type inference to prevent runtime errors and guide code refactoring. It implements a structural pattern for managing application state and rendering user interfaces through a virtual DOM, utilizing immutable data and purity-based state transit

React Email Editor is a drag-and-drop visual builder for creating responsive email templates, built as a React embeddable component. It also serves as an AI-powered email designer, a collaborative email design tool, and a React component library for composing emails programmatically with JSX. The editor represents designs as structured JSON and supports multi-format rendering for email clients, web pages, and PDF. What distinguishes this editor is its deep AI integration: users can generate full email templates from natural language, rewrite text with chosen intent, produce multiple text vari

Web Components is a set of specifications for creating reusable custom elements with encapsulated styling and logic for the web. It provides a standard for defining new HTML tags that function as independent components across different browser engines. The system is built on three primary pillars: the Custom Elements standard for defining new tags, the Shadow DOM implementation for isolating internal document structures and styles, and the HTML Templates specification for defining reusable fragments of markup that remain inert until instantiated. These capabilities enable modular web design

Lit-element es un framework de elementos personalizados y una librería de UI reactiva que proporciona una clase base para crear elementos HTML estándar. Está diseñado para construir componentes web que actualizan automáticamente su estado visual cuando cambian las propiedades internas o los datos. El proyecto permite el desarrollo de componentes encapsulados utilizando el shadow root para aislar estilos y estructuras. Utiliza plantillas literales de JavaScript para renderizar plantillas declarativas sin necesidad de un paso de compilación. La librería cubre la gestión del estado mediante el seguimiento de propiedades reactivas y la sincronización de propiedades de clase de JavaScript con atributos HTML. También incluye capacidades para el alcance de selectores CSS y la gestión de ciclos de renderizado asíncronos para manejar las actualizaciones de la interfaz.