Browse free open source JavaScript Libraries and projects below. Use the toggles on the left to filter open source JavaScript Libraries by OS, license, language, programming language, and project status.

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  • 1
    React Native for Web

    React Native for Web

    React Native Components and APIs for the Web

    React Native for Web is an accessible implementation of React Native's Components and APIs that is interoperable with React DOM. Accessible HTML. Support different devices and input modes, render semantic tags. High-quality interactions. Support gestures and multiple input modes (touch, mouse, keyboard). Reliable styles. Rely on scoped styles and automatic vendor-prefixing. Support RTL layouts. Responsive containers. Respond to element resize events. Incremental adoption. Interoperates with existing React DOM components. Bundle only what you use. React Native for Web is used in production web apps by Twitter, Flipkart, Uber, Major League Soccer, and many others. It also powers web support in multi-platform React projects such as Expo, React Native Elements, React Native Paper, and React Native Base.
    Downloads: 0 This Week
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  • 2
    React Projects

    React Projects

    Collection of React example / tutorial projects

    This repository is a collection of small-to-medium React applications that showcase practical patterns, from stateful widgets to multi-page interfaces. Each project is self-contained and demonstrates specific techniques—hooks for state and effects, context for global state, custom hooks for reuse, and reducer patterns for complex updates. The codebases include common UI tasks like forms, modals, lists, filtered search, and pagination, along with data fetching and basic routing where appropriate. Because every project focuses on a narrow set of concepts, learners can clone a single folder, run it, and grasp the idea without wading through a monolith. The examples are structured to be approachable yet idiomatic, encouraging good habits while staying close to what developers actually build. Over time, the collection functions as a portfolio of reference implementations that students and practitioners can adapt to new projects.
    Downloads: 0 This Week
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  • 3
    React Rainbow

    React Rainbow

    React Rainbow Components. Build your web application in a snap

    React Rainbow is a collection of components that will reliably help you build your application in a snap. Give it a hack and let us know what you think. We designed each component with i18n in mind. Any new component or feature we may add in the future has to be able to work fully in different locales. Proper documentation based on interactive examples to help you understand the features of each component. We know how important it for you is to test your UI. Our npm package provides a webdriver.io page object for almost every component. Our components are test infected. We like to test our components as much as possible.
    Downloads: 0 This Week
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  • 4
    React Slick

    React Slick

    React carousel component

    This library is the port of jQuery slick library. React slick is a carousel component built with React. It is a react port of slick carousel. The easiest way to try out react-slick is using the Code Sandbox example. After you are done installing through yarn or npm, now you will have to include CSS in your project. But be aware slick-carousel has a peer-dependancy on jQuery which you, or your colleagues may not like to see in your console output, so you can always grab the CSS from there and convert it into any CSS in JS solution that you might be using.
    Downloads: 0 This Week
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    React Sortable HOC

    React Sortable HOC

    Turn any list into an animated, accessible and sortable list

    The React Sortable HOC project is a higher-order component library for React that enables drag-and-drop sorting of lists and collections. It provides a set of utilities that allow developers to create sortable interfaces with smooth animations and minimal effort. The library is built on top of React’s component model, making it easy to integrate into existing applications. It supports features such as keyboard accessibility, customizable drag handles, and dynamic list updates. The system is designed to handle both simple and complex sorting scenarios, including nested lists and grid layouts. It also includes performance optimizations to ensure smooth interactions even with large datasets. Overall, react-sortable-hoc offers a flexible and efficient way to implement sortable UI components in React applications.
    Downloads: 0 This Week
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  • 6
    React Toolbox

    React Toolbox

    A set of React components implementing Google's Material Design

    React Toolbox is a set of React components that implements Google Material Design specification. It's built on top of some the trendiest proposals like CSS Modules (written in SASS), Webpack and ES6. The library harmoniously integrates with your Webpack workflow and it's easily customizable and very flexible. Check our awesome documentation (which is built using React Toolbox) and try all the components with live examples. We've created a playground so you don't need to install anything to fall in love with our components, so fun! React Toolbox uses CSS Modules by default to import stylesheets written using PostCSS & postcss-preset-env features. In case you want to import the components already bundled with CSS, your module bundler should be able to require these PostCSS modules. Of course this is a set of React components so you should be familiar with React. If want to customize your components via themes, you may want to take a look to react-css-themr, used by React Toolbox.
    Downloads: 0 This Week
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  • 7
    React Transmit

    React Transmit

    Relay-inspired library based on Promises instead of GraphQL.

    Relay-inspired library based on Promises instead of GraphQL. API similar to the official Relay API, adapted for Promises. Higher-order Component (HoC) syntax is great for functional-style React. Composable Promise-based queries using fragments. Isomorphic architecture supports server-side rendering. Also works with React Native!
    Downloads: 0 This Week
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  • 8
    React-Virgin

    React-Virgin

    The react-native UI Kit you've been looking for

    React-Virgin is a React Native UI kit designed to provide developers with a ready-to-use boilerplate for building mobile applications quickly and efficiently. It includes a foundational project structure along with a set of prebuilt UI components that cover common mobile interface needs such as buttons, lists, headers, loaders, and chat elements. The library is intended to accelerate development by eliminating the need to set up navigation, layout systems, and basic UI elements from scratch. It integrates tools like react-navigation and includes both horizontal and vertical list components, making it easier to create dynamic and scrollable mobile interfaces. React-Virgin focuses on simplicity and accessibility, offering a clean starting point that developers can customize and expand as their application grows. It also includes example implementations and documentation to guide developers through setup and usage.
    Downloads: 0 This Week
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  • 9
    React-WeUI

    React-WeUI

    WeUI Components build with React

    React-WeUI is a React component library that brings WeUI, the interface system associated with WeChat-style mobile design, into the React development workflow. Its purpose is to let developers build mobile-oriented interfaces with React while preserving the visual language and component behavior expected from WeUI. The project combines React components with the underlying WeUI styling, which means teams can work in a modern component architecture instead of manually stitching together markup and CSS for each screen. The repository includes documentation with live examples, installation options for both package managers and browser-based usage, and example code that shows how quickly a page can be assembled from imported components. Because of its heritage, React-WeUI is especially relevant for mobile web experiences, lightweight app-like pages, and products targeting users familiar with WeChat-inspired interaction patterns.
    Downloads: 0 This Week
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  • 10
    Recompose

    Recompose

    React utility belt for function components and higher-order components

    Recompose is a React utility belt for function components and higher-order components. Think of it like lodash for React. You can use Recompose to lift state into functional wrappers, perform the most common React patterns, optimize rendering performance, interoperate with other libraries, build your own libraries, etc. Recompose helpers integrate really nicely with external libraries like Relay, Redux, and RxJS. Recompose focuses on higher-order components. HoCs are functions that accept a base component and return a new component with additional functionality. They can be used to abstract common tasks into reusable pieces. Recompose provides a toolkit of helper functions for creating higher-order components. Many React libraries end up implementing the same utilities over and over again, like shallowEqual and getDisplayName. Recompose provides these utilities for you. Although Recompose encourages the use of function components whenever possible it works with normal React components.
    Downloads: 0 This Week
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  • 11
    RecordRTC

    RecordRTC

    RecordRTC is WebRTC JavaScript library for audio/video

    RecordRTC is a client-side JavaScript library for recording browser media streams. It can record audio, video, screen activity, canvas animation, and combined media sources through WebRTC-related browser APIs. The library supports common modern browsers across Windows, macOS, Linux, Android, and selected iOS or Safari use cases. Developers can use promise-based or callback-based recording flows, then retrieve blobs for saving, uploading, or playback. It offers multiple recorder strategies, MIME type options, time-sliced blob delivery, CDN usage, npm installation, and many demos. RecordRTC is useful for screen recorders, webcam capture tools, audio note apps, browser tutorials, and media recording prototypes.
    Downloads: 0 This Week
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  • 12
    Recta Host

    Recta Host

    Direct printing from JS

    Direct printing from JS. This make you direct print from your website / page to ESCPOS based printer (Thermal / Dot Metrix)
    Downloads: 0 This Week
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  • 13
    Reflexbox

    Reflexbox

    Responsive React Flexbox Grid System

    Reflexbox is a React utility library that provides a set of flexible layout components built on top of the CSS Flexbox specification, enabling developers to create responsive layouts with minimal effort. It introduces components such as Box and Flex that abstract common layout patterns into reusable primitives, allowing developers to apply spacing, alignment, and sizing through props rather than writing custom CSS. The library integrates seamlessly with styled-system, enabling theme-based design and consistent spacing scales across applications. Reflexbox is designed to be highly composable, allowing developers to build complex layouts by combining simple components. It emphasizes responsiveness by supporting array-based props that adapt styles across breakpoints. The library is lightweight and focuses on performance, making it suitable for both small projects and large-scale applications.
    Downloads: 0 This Week
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  • 14
    Remote Jobs

    Remote Jobs

    A list of semi to fully remote-friendly companies (jobs) in tech

    Remote Jobs is a community-curated, open source repository that lists companies around the world that support remote work. Each entry describes a company, whether it’s fully remote or partially remote, what regions they hire in, and links to their career pages. The repo serves as a living directory for job seekers looking for remote-friendly employers and for companies wishing to be listed. Contributions are encouraged via pull requests, with guidelines to keep information accurate and up to date.
    Downloads: 0 This Week
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  • 15
    Reselect

    Reselect

    Selector library for Redux

    Simple “selector” library for Redux (and others) inspired by getters in NuclearJS, subscriptions in re-frame and this proposal from speedskater. Selectors can compute derived data, allowing Redux to store the minimal possible state. Selectors are efficient. A selector is not recomputed unless one of its arguments changes. Selectors are composable. They can be used as input to other selectors. Reselect provides a function createSelector for creating memoized selectors. createSelector takes an array of input-selectors and a transform function as its arguments. If the Redux state tree is mutated in a way that causes the value of an input-selector to change, the selector will call its transform function with the values of the input-selectors as arguments and return the result. If the values of the input-selectors are the same as the previous call to the selector, it will return the previously computed value instead of calling the transform function.
    Downloads: 0 This Week
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  • 16
    Resumable.js

    Resumable.js

    Library for providing multiple uploads via the HTML5 File API

    Resumable.js is a JavaScript library providing multiple simultaneous, stable and resumable uploads via the HTML5 File API. The library is designed to introduce fault-tolerance into the upload of large files through HTTP. This is done by splitting each file into small chunks. Then, whenever the upload of a chunk fails, uploading is retried until the procedure completes. This allows uploads to automatically resume uploading after a network connection is lost either locally or to the server. Additionally, it allows for users to pause, resume and even recover uploads without losing state because only the currently uploading chunks will be aborted, not the entire upload. Resumable.js does not have any external dependencies other than the HTML5 File API. This is relied on for the ability to chunk files into smaller pieces. Currently, this means that support is widely available in to Firefox 4+, Chrome 11+, Safari 6+ and Internet Explorer 10+.
    Downloads: 0 This Week
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  • 17
    Riot

    Riot

    Simple and elegant component-based UI library

    Why do we need a new UI library? The frontend space is indeed crowded, but we honestly feel the solution is still “out there”. We believe Riot.js offers the right balance for solving the great puzzle. Riot.js brings custom elements to all modern browsers without the use of any polyfill! A custom element glues relevant HTML and JavaScript together forming a reusable component. It is designed to offer you everything you wished native the web components API looked like. HTML syntax is the de facto language of the web and it’s designed for building user interfaces. The syntax is explicit, nesting is inherent to the language, and attributes offer a clean way to provide options for custom tags. Minimalism sets Riot.js apart from others. One of the design goals was to introduce a powerful tag syntax with as little boilerplate as possible. Riot.js has between 10 and 100 times fewer API methods than other UI libraries.
    Downloads: 0 This Week
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  • 18
    Simple Automation Middleware (SAM) est un framework permettant de batir des applications sous forme de modules. Il fournit des bibliothèques COM Delphi implémentant la gestion des évènements, Dispatch etc...
    Downloads: 0 This Week
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  • 19
    SWFSize
    SWFSize is a small (really small) library for Adobe Flash technology that works in collaboration with SWFObject and provides control over the swf's container metrics. To add, SWFSize gives you the ability to use the browser's native scrollbars.
    Downloads: 0 This Week
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  • 20
    SWire4js

    SWire4js

    A JavaScript library for developing SWire web applications

    SWire4js is a JavaScript library which facilitates the development of SWire web applications. The main purpose of this library is to provide the developer with utility functions for managing the SWire protocol, namely functions for encoding SWire requests and decoding SWire responses. Secondly, it provides a function for generating Stata missing values. SWire4js is self-contained in the swire4js.js file. A SWire web application is a web page which interacts with Stata through SWire. Examples of SWire web applications include those of the SWire Web Apps Collection. This is a collection of demo SWire web applications which is useful in learning how to develop with SWire and SWire4js. These apps can been tried on-line here: http://swire-web-apps-collection.sourceforge.net/ To learn more about SWire, visit https://sourceforge.net/projects/swire/
    Downloads: 0 This Week
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  • 21
    Sandia Cyber Omni Tracker

    Sandia Cyber Omni Tracker

    Sandia Cyber Omni Tracker (SCOT)

    SCOT is an open-source cybersecurity incident response and threat intelligence management system developed by Sandia National Laboratories. It centralizes alert collection, facilitates team collaboration, and enriches data with automated analysis, enhancing the efficiency and effectiveness of security operations teams.
    Downloads: 0 This Week
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  • 22
    Schema.DTS

    Schema.DTS

    JSON-LD TypeScript types for Schema vocabulary

    The project provides a comprehensive set of TypeScript typings based on the Schema vocabulary, enabling developers to author JSON-LD structured data with strong type safety. It supplies both high-level discriminated unions and helper types to model contexts, graphs, and linked data relationships with clarity and accuracy. Usage examples demonstrate how one can import types like Person, WithContext, or Graph and compose JSON-LD objects in a way that aligns with semantic-web and knowledge-graph practices. The repository also contains a generator tool that can pull ontology definitions and emit TypeScript definitions in bulk, ensuring the typings stay up to date and maintain consistency. It supports scenarios such as nested objects, graphs of entities, and action types with input/output constraints, which makes it suitable for rich metadata authoring and linked-data workflows. While it is maintained by Google, it is not an officially supported Google product.
    Downloads: 0 This Week
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  • 23
    ScrollBooster

    ScrollBooster

    Enjoyable content drag-to-scroll library

    Enjoyable drag-to-scroll micro-library (~2KB gzipped). Supports smooth content scroll via mouse/touch dragging, trackpad or mouse wheel. Zero dependencies. Easy to setup yet flexible enough to support any custom scrolling logic.
    Downloads: 0 This Week
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  • 24
    ScrollMagic

    ScrollMagic

    The javascript library for magical scroll interactions

    ScrollMagic helps you to easily react to the user's current scroll position. ScrollMagic is a complete rewrite of its predecessor Superscrollorama by John Polacek. A plugin-based architecture offers easy customizability and extendability. Animate based on scroll position, pin an element starting at a specific scroll position, toggle CSS classes of elements on and off based on scroll position, effortlessly add parallax effects to your website, create an infinitely scrolling page, add callbacks at specific scroll positions or while scrolling past a specific section. Either trigger an animation or synchronize it to the scrollbar movement (like a playback scrub control). Pin an element starting at a specific scroll position, either indefinitely or for a limited amount of scroll progress (sticky elements). You can add callbacks at specific scroll positions or while scrolling past a specific section, passing a progress parameter.
    Downloads: 0 This Week
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  • 25
    This is a JavaScript library which gives the ability to use cryptographic functionality abstracted of available technologies on the browser side. It executes a cryptographic function with the fastest technology including Java, JavaScript and Flash.
    Downloads: 0 This Week
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