React is a JavaScript library for building user interfaces. Lots of people use React as the V in MVC. React makes it painless to create interactive UIs. Design simple views for each state in your application, and React will efficiently update and render just the right components when your data changes. React can also render on the server using Node and power mobile apps using React Native.
 
React components implement a render() method that takes input data and returns what to display. Since component logic is written in JavaScript instead of templates, you can easily pass rich data through your app and keep state out of the DOM.

React is a JavaScript library for building user interfaces. Lots of people use React as the V in MVC. React makes it painless to create interactive UIs. Design simple views for each state in your application, and React will efficiently update and render just the right components when your data changes. React can also render on the server using Node and power mobile apps using React Native.

React - JavaScript library for building user interfaces

Inferno is an insanely fast, 9kb React-like library for building high-performance user interfaces on both the client and server. Inferno aims to provide all the great benefits that React does, plus other great features for people already familiar with the React ecosystem, such as: lifecycle events on functional components, server side render streams, better real-world performance, lower memory consumption and faster parse/load times. 
 
Inferno allows people to switch their existing React projects to Inferno in a few lines of code using inferno-compat. Inferno is a JavaScript library for building user interfaces in a declarative manner. Rather than working with MVC/MVVM style patterns, Inferno uses a component-based approach where data flows in one direction, making coding predictable, re-usable and highly testable. Based on the concept of learn once, write anywhere, Inferno doesn't impose any restrictions on how you create components. You literally write JavaScript to state how you'd like your UI to look – Inferno does all the rest. Inferno also renders content on the server via inferno-server and NodeJS, so you can write awesome UIs that get rendered full-stack.

Inferno is an insanely fast, 9kb React-like library for building high-performance user interfaces on both the client and server. Inferno aims to provide all the great benefits that React does, plus other great features for people already familiar with the React ecosystem, such as: lifecycle events on functional components, server side render streams, better real-world performance, lower memory consumption and faster parse/load times. 

Inferno - An extremely fast, React-like JavaScript library for building modern user interfaces

PREACT is a fast 3kB alternative to React, with the same ES2015 API. It provides the thinnest possible Virtual DOM abstraction on top of the DOM. The web is a stable platform, it's time we stopped reimplementing it in the name of safety. Preact is also a first-class citizen of the web platform. It diffs Virtual DOM against the DOM itself, registers real event handlers, and plays nicely with other libraries. 
 
 Virtual DOM Components make it easy to share reusable things - everything from buttons to data providers. Preact's design means you can seamlessly use thousands of Components available in the React ecosystem. Adding a simple preact-compat alias to your bundler provides a compatibility layer that enables even the most complex React components to be used in your application.

PREACT is a fast 3kB alternative to React, with the same ES2015 API.  It provides the thinnest possible Virtual DOM abstraction on top of the DOM. The web is a stable platform, it's time we stopped reimplementing it in the name of safety.  Preact is also a first-class citizen of the web platform. It diffs Virtual DOM against the DOM itself, registers real event handlers, and plays nicely with other libraries. 

PREACT - Fast 3kB alternative to React, with the same ES2015 API

NuclearJS is a traditional Flux architecture built with ImmutableJS data structures. The goal of NuclearJS is to provide a way to model data that is easy to reason about and decouple at very large scale. The framework should be implemented functionally wherever appropriate. This reduces incidental complexity and pairs well with Immutability.
 
Using NuclearJS should encourage the modeling of your application state in the most minimal way possible. A NuclearJS system should be able to function without any sort of UI or frontend. It should be backend/frontend agnostic and be able to run on a NodeJS server.

NuclearJS is a traditional Flux architecture built with ImmutableJS data structures.  The goal of NuclearJS is to provide a way to model data that is easy to reason about and decouple at very large scale. The framework should be implemented functionally wherever appropriate. This reduces incidental complexity and pairs well with Immutability.

NuclearJS - Reactive Flux built with ImmutableJS data structures. Framework agnostic.

Sleek, intuitive, and powerful front-end framework for faster and easier web development. A 12-column responsive grid, dozens of components, JavaScript plugins, typography, form controls, and even a web-based Customizer to make Bootstrap your own.

Bootstrap - HTML, CSS, and Javascript framework

Spine is a lightweight MVC library for building JavaScript web applications. Spine gives you structure and then gets out of your way, allowing you to concentrate on the fun stuff: building awesome web applications. Spine is opinionated in its approach to web application architecture and design. Spine's architecture complements patterns such as de-coupled components and CommonJS modules, markedly helping with code quality and maintainability.

spine - Lightweight MVC library for building JavaScript applications

Matreshka.js is a simple JavaScript framework for single page applications creation. It fills the gap between a junior and a senior because of simple and intuitive API based on JavaScript classes and accessors. Everything you need to get started is your JavaScript knowledge.
 
Its features include: 
<ul>
<li>Reactive API which allows to solve hard and confusing problems easily</li>
<li>High robustness of developed apps</li>
<li>The ability to refactor legacy applications without rewriting them from scratch</li>
<li>Only couple of hours is needed to master the framework because of an absence of complex concepts</li>
<li>One of the most user-friendly documentations among JavaScript libraries</li>
</ul>

Matreshka.js is a simple JavaScript framework for single page applications creation. It fills the gap between a junior and a senior because of simple and intuitive API based on JavaScript classes and accessors. Everything you need to get started is your JavaScript knowledge.


Matreshka.js framework - A simple framework for single-page applications creation

Durandal is a cross-device, cross-platform client framework written in JavaScript and designed to make Single Page Applications (SPAs) easy to create and maintain. It is built on top of jQuery, Knockout & RequireJS. It integrates with popular CSS libraries such as Bootstrap and Foundation. 

Durandal - Single Page Apps Done Right

Mithril is a modern client-side Javascript framework for building Single Page Applications. It's small (8.18 KB gzipped), fast and provides routing and XHR utilities out of the box. It supports virtual dom, which is a Javascript data structure that describes a DOM tree. It consists of nested virtual DOM nodes, also known as vnodes. 
 
It is comparable to Facebook react. Its overall size is 8 GB (gzipped) and its performance is better than its competitors. Mithril is used by many well-known companies (e.g. Vimeo, Nike, Fitbit), and it powers large open-sourced platforms too (e.g. Lichess, Flarum).

Mithril is a modern client-side Javascript framework for building Single Page Applications. It's small (8.18 KB gzipped), fast and provides routing and XHR utilities out of the box. It supports virtual dom, which is a Javascript data structure that describes a DOM tree. It consists of nested virtual DOM nodes, also known as vnodes. 

Mithril - A Javascript Framework for Building Brilliant Applications

Polymer is a lightweight library that helps you take full advantage of Web Components. With Web Components, you can create reusable custom elements that interoperate seamlessly with the browser’s built-in elements, or break your app up into right-sized components, making your code cleaner and less expensive to maintain.

Polymer - Build modern apps using web components

The PatternFly library is a collection of UI design patterns. Design patterns are recurring solutions that solve common design problems and provide a common language for people who create user interfaces. In general, patterns do not specify requirements, but rather, present recommended solutions to design problems. PatternFly patterns build on that approach by additionally considering the needs of complex enterprise IT software, and the habits and motivations of its users, in their recommendations.
 
This reference implementation of PatternFly is based on Bootstrap v3. Think of PatternFly as a "skinned" version of Bootstrap with additional components and customizations. PatternFly is meant to be used as a replacement for Bootstrap, so don't include the Bootstrap CSS if you are including the PatternFly CSS in your project.

The PatternFly library is a collection of UI design patterns. Design patterns are recurring solutions that solve common design problems and provide a common language for people who create user interfaces. In general, patterns do not specify requirements, but rather, present recommended solutions to design problems. PatternFly patterns build on that approach by additionally considering the needs of complex enterprise IT software, and the habits and motivations of its users, in their recommendations.

Patternfly -  A community of designers and developers collaborating to build a UI framework for enterprise web applications

w2ui is a JavaScript UI library for data-driven web applications. Complete w2ui (v1.5.x) library is under 100kb (minified and gziped) and provides extremely fast load and execution. Out of the box w2ui is an all-in-one solution. It contains common UI widgets: Grid, Forms, Toolbars, Layout, Sidebar, Tabs, Popup and various field controls. You do not need to put together a collection of mismatched plugins to accomplish your goals.


w2ui - JavaScript UI library for data-driven web applications

Brick is a collection of UI components designed for the easy and quick building of web application UIs. Brick components are built using the Web Components standard to allow developers to describe the UI of their app using the HTML syntax they already know.
 
List of components supported by Brick. 
<ul>
<li><a href="https://github.com/mozbrick/brick-action">brick-action</a></li>
<li><a href="https://github.com/mozbrick/brick-appbar">brick-appbar</a></li>
<li><a href="https://github.com/mozbrick/brick-button">brick-button</a></li>
<li><a href="https://github.com/mozbrick/brick-calendar">brick-calendar</a></li>
<li><a href="https://github.com/mozbrick/brick-deck">brick-deck</a></li>
<li><a href="https://github.com/mozbrick/brick-dialog">brick-dialog</a></li>
<li><a href="https://github.com/mozbrick/brick-flipbox">brick-flipbox</a></li>
<li><a href="https://github.com/mozbrick/brick-form">brick-form</a></li>
<li><a href="https://github.com/mozbrick/brick-input">brick-input</a></li>
<li><a href="https://github.com/mozbrick/brick-layout">brick-layout</a></li>
<li><a href="https://github.com/mozbrick/brick-listview">brick-listview</a></li>
<li><a href="https://github.com/mozbrick/brick-menu">brick-menu</a></li>
<li><a href="https://github.com/mozbrick/brick-storage-indexeddb">brick-storage-indexeddb</a></li>
<li><a href="https://github.com/mozbrick/brick-tabbar">brick-tabbar</a></li>
</ul>

Brick is a collection of UI components designed for the easy and quick building of web application UIs. Brick components are built using the Web Components standard to allow developers to describe the UI of their app using the HTML syntax they already know.

Brick - UI Web Components for Modern Web Apps

Brahmos is a supercharged JavaScript library to build user interfaces with modern React API and native templates. Brahmos supports all the APIs of React including the upcoming concurrent mode APIs and the existing ones. It has its own custom fiber architecture and concurrent mode implementation to support the concurrent UI patterns. It is a fast alternative to Virtual DOM. (JSX without VDOM).

Brahmos - Super charged JavaScript library with modern React API and native templates. 

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