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.

  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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  • Keep company data safe with Chrome Enterprise Icon
    Keep company data safe with Chrome Enterprise

    Protect your business with AI policies and data loss prevention in the browser

    Make AI work your way with Chrome Enterprise. Block unapproved sites and set custom data controls that align with your company's policies.
    Download Chrome
  • 1
    Retire.js

    Retire.js

    Scanner detecting the use of JavaScript libraries

    There is a plethora of JavaScript libraries for use on the web and in node.js apps out there. This greatly simplifies, but we need to stay updated on security fixes. "Using Components with Known Vulnerabilities" is now a part of the OWASP Top 10 and insecure libraries can pose a huge risk for your web app. The goal of Retire.js is to help you detect the use of versions with known vulnerabilities. Scan a web app or node app for use of vulnerable JavaScript libraries and/or node modules. grunt-retire scans your grunt-enabled app for use of vulnerable JavaScript libraries and/or node modules. Scans visited sites for references to insecure libraries and puts warnings in the developer console. An icon on the address bar displays will also indicate if vulnerable libraries were loaded. Retire.js has been adapted as a plugin for the penetration testing tools Burp and OWASP ZAP.
    Downloads: 21 This Week
    Last Update:
    See Project
  • 2
    Playwright

    Playwright

    Node library to automate Chromium, Firefox & WebKit with a single API

    Playwright is a Node library for automating Chromium, Firefox and WebKit using a single API. It supports headless execution for all these browsers on Linux, macOS and Windows, providing automated web browser interactions that are fast, capable, reliable and ever-green. Playwright enables a broad spectrum of cross-browser web automation capabilities, which are used by Single Page Apps and Progressive Web Apps. These include scenarios that span multiple pages, domains and iframes; emulation of mobile devices, geolocation, and permissions; upload and download files and many more.
    Downloads: 16 This Week
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  • 3
    Puppeteer

    Puppeteer

    Headless Chrome Node.js API

    Puppeteer is a headless Node library that provides a high level API for controlling Chromium or Chrome over the DevTools protocol. It requires zero setup and comes bundled with the Chromium version most suited to it. Puppeteer is headless by default, making it fast to run. However, it can also be set to run full or non-headless Chrome or Chromium, simply set the headless option when launching a browser. Many of the things you can do manually in the browser, you can also do with Puppeteer such as generate page screenshots and PDFs, crawl a Single-Page Application, test Chrome extensions and more.
    Downloads: 16 This Week
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    See Project
  • 4
    socket.io

    socket.io

    Realtime application framework (Node.JS server)

    socket.io is a JavaScript library that allows for realtime, bi-directional communication between web clients and servers. It is composed of two parts: a Node.js server and a JavaScript client library that runs in the browser. socket.io is focused on both reliability and speed, delivering an immensely powerful, fast and yet easy to use realtime engine that’s used by just about everyone: from Microsoft Office and Zendesk to hackathon winners and small startups. It’s considered one of the most depended-upon npm modules, and works on every platform, browser or device.
    Downloads: 9 This Week
    Last Update:
    See Project
  • Simple, Secure Domain Registration Icon
    Simple, Secure Domain Registration

    Get your domain at wholesale price. Cloudflare offers simple, secure registration with no markups, plus free DNS, CDN, and SSL integration.

    Register or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.
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  • 5
    jQuery Validation Plugin

    jQuery Validation Plugin

    jQuery Validation Plugin library sources

    The jQuery Validation Plugin provides drop-in validation for your existing forms, while making all kinds of customizations to fit your application really easy. This jQuery plugin makes simple clientside form validation easy, whilst still offering plenty of customization options. It makes a good choice if you’re building something new from scratch, but also when you’re trying to integrate something into an existing application with lots of existing markup. The plugin comes bundled with a useful set of validation methods, including URL and email validation, while providing an API to write your own methods. All bundled methods come with default error messages in english and translations into 37 other languages. The plugin was initially written and maintained by Jörn Zaefferer, a member of the jQuery team, lead developer on the jQuery UI team and maintainer of QUnit. It was started back in the early days of jQuery in 2006, and updated and improved since then.
    Downloads: 8 This Week
    Last Update:
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  • 6
    FastClick

    FastClick

    Easy-to-use library to remove click delays on browsers with touch UIs

    FastClick is a simple, easy-to-use library for eliminating the 300ms delay between a physical tap and the firing of a click event on mobile browsers. The aim is to make your application feel less laggy and more responsive while avoiding any interference with your current logic. FastClick is developed by FT Labs, part of the Financial Times. Note: As of late 2015 most mobile browsers - notably Chrome and Safari - no longer have a 300ms touch delay, so fastclick offers no benefit on newer browsers, and risks introducing bugs into your application. Consider carefully whether you really need to use it. The library has been deployed as part of the FT Web App. FastClick doesn't attach any listeners on desktop browsers.
    Downloads: 4 This Week
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  • 7
    LBRY App

    LBRY App

    Browser and wallet for LBRY, the decentralized, user-controlled

    LBRY is a free, open, and community-run digital marketplace. Build the future of content freedom. What if anyone in the world could publish a piece of digital content, anyone else in the world could access it, for free or for payment, and that entire system worked end-to-end without any centralized authority or point of control? Looking for API documentation, formal specifications, how-tos, resources, or the meaning of life? Find at least some of these things in the resources area. No matter your experience or skill level, you can progress content freedom. This repo contains the UI code that powers the official LBRY desktop app. The LBRY app is a graphical browser for the decentralized content marketplace provided by the LBRY protocol. It is essentially the lbry daemon bundled with a UI using Electron.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 8
    fullPage.js

    fullPage.js

    Create beautiful fullscreen scrolling websites fast and easy

    fullPage.js is an easy-to-use library for creating beautiful, fullscreen scrolling websites/ onepage sites/ single page websites complete with all the features you need. With fullPage.js you can add landscape sliders and links to sections of your site, create smaller or bigger sections, use extensions and more! fullPage.js is compatible with all modern browsers and even some old ones like IE9 and Opera 12. It also provides touch support designed for mobile devices and touch screen computers. fullPage.js is fully supported by a great community, has good documentation and offers plenty of examples to get you started quickly. See these examples on the official website: http://alvarotrigo.com/fullPage/
    Downloads: 2 This Week
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  • 9
    jit enables lazy loading of javascript resources by injecting proxy functions that will load the required script the first time they are used.
    Downloads: 12 This Week
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  • The All-in-One Commerce Platform for Businesses - Shopify Icon
    The All-in-One Commerce Platform for Businesses - Shopify

    Shopify offers plans for anyone that wants to sell products online and build an ecommerce store, small to mid-sized businesses as well as enterprise

    Shopify is a leading all-in-one commerce platform that enables businesses to start, build, and grow their online and physical stores. It offers tools to create customized websites, manage inventory, process payments, and sell across multiple channels including online, in-person, wholesale, and global markets. The platform includes integrated marketing tools, analytics, and customer engagement features to help merchants reach and retain customers. Shopify supports thousands of third-party apps and offers developer-friendly APIs for custom solutions. With world-class checkout technology, Shopify powers over 150 million high-intent shoppers worldwide. Its reliable, scalable infrastructure ensures fast performance and seamless operations at any business size.
    Learn More
  • 10
    HTML5 canvas chart library (javascript) . Display and animate charts & graph in HTML5 Canvas. Signal,pie,ring,led,digital,odometer, radial and lineal meters, thermometer and vumeter,piramid,funnel,stack and Multiserie charts availables
    Downloads: 1 This Week
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  • 11
    ** Guys I have built a much more powerful Fully Featured CMS system at: https://github.com/MacdonaldRobinson/FlexDotnetCMS Macs CMS is a Flat File ( XML and SQLite ) based AJAX Content Management System. It focuses mainly on the Edit In Place editing concept. It comes with a built in blog with moderation support, user manager section, roles manager section, SEO / SEF URL
    Downloads: 1 This Week
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  • 12
    The aim of our project is to create a set of examples of use of JSF 2.1 MC Faces components from MC Components series. MC Components library provides a rich set of JSF 2.1 components with jsp and facelets support. Components available in this rich set provide simple and convenient access to funcionalities desired in each JSF web application. Most of components use famous JQuery javascript library as a javascript engine.
    Downloads: 1 This Week
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  • 13
    JavaScript 2D game engine
    Downloads: 0 This Week
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  • 14
    A lightweight JavaScript calendar widget for the Prototype framework with an emphasis on standards-compliance and current best practices.
    Downloads: 0 This Week
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  • 15
    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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  • 16
    CubeScribe

    CubeScribe

    Render Rubiks Cube OLL and PLL Algorithm Diagrams with HTML5 & JS

    A simple JavaScript class that utilizes the HTML 5 canvas element to render the face diagrams often used to document Rubik's Cube algorithms.
    Downloads: 0 This Week
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  • 17
    D-Parts Web Application Framework
    D-Parts es un framework para Aplicaciones Web, netamente en lenguaje PHP, con acceso a bases de datos MySQL.
    Downloads: 0 This Week
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  • 18
    HTML Canvas Javascript Library
    A full-featured lightweight wrapper library of the native html canvas element written in Javascript, aimed to make visualization and animation using canvas simpler. Features animation support, layers, event capture, multitouch and many examples.
    Downloads: 0 This Week
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  • 19
    Immutable.js

    Immutable.js

    Immutable collections for JavaScript

    Immutable.js offers a collection of Persistent Immutable data structures for JavaScript. Immutable data is unchangeable once created, which makes application development so much simpler. There’s no defensive copying, and you get advanced memoization and change detection techniques with simple logic. Persistent data gives you a mutative API, one that doesn’t update data in-place but always produces new and updated data. The data structures that Immutable.js provides include List, Stack, Map, OrderedMap, Set and more. These structures are highly efficient on modern JavaScript VMs, and minimize the need to cache or copy data.
    Downloads: 0 This Week
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  • 20
    JSNAV - a library that allows to specify and save some javascript calls in the page's URI. This library helps to standardize the coding javascript URI handler in the anchors. Also it helps to keep the classic navigation anchors.
    Downloads: 0 This Week
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  • 21
    Jimp

    Jimp

    An image processing library written entirely in JavaScript for Node

    An image processing library for Node written entirely in JavaScript, with zero native dependencies. If you're using this library with TypeScript the method of importing slightly differs from JavaScript. Instead of using require, you must import it with ES6 default import scheme. If you're using a web bundles (webpack, rollup, parcel) you can benefit from using the module build of jimp. Using the module build will allow your bundler to understand your code better and exclude things you aren't using. If you're using webpack you can set process.browser to true and your build of jimp will exclude certain parts, making it load faster. The static Jimp.read method takes the path to a file, URL, dimensions, a Jimp instance or a buffer and returns a Promise. In some cases, you need to pass additional parameters with an image's URL.
    Downloads: 0 This Week
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  • 22
    LocalJS
    Build Cloud Desktop Application with Web Pages. Deployed from Cloud, Run on Desktop, Developed with HTML + CSS + JavaScript. Two Simple Steps turn your HTML pages into Cloud Desktop Application: Find more at http://localjs.org/
    Downloads: 0 This Week
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  • 23
    Masonry

    Masonry

    A cascading grid layout plugin

    Masonry is a JavaScript grid layout library. It works by placing elements in optimal position based on available vertical space, sort of like a mason fitting stones in a wall. You’ve probably seen it in use all over the Internet. All sizing and styling of items is handled by your own CSS. tem sizes can be set with percentages for responsive layouts. With the masonry layout mode, set percentage-width columnWidth with element sizing. Set percentPosition: true so item positions are likewise set with percentages to reduce adjustment transitions on window resize. Unloaded images can throw off Masonry layouts and cause item elements to overlap. imagesLoaded resolves this issue. imagesLoaded is a separate script you can download at imagesloaded.desandro.com. Or, initialize Masonry after all images have been loaded.
    Downloads: 0 This Week
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  • 24
    Nock

    Nock

    HTTP server mocking and expectations library for Node.js

    HTTP server mocking and expectations library for Node.js. Nock can be used to test modules that perform HTTP requests in isolation. For instance, if a module performs HTTP requests to a CouchDB server or makes HTTP requests to the Amazon API, you can test that module in isolation. Nock works by overriding Node's http.request function. Also, it overrides http.ClientRequest too to cover for modules that use it directly.
    Downloads: 0 This Week
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  • 25
    PDF API HTML5 Web Apps

    PDF API HTML5 Web Apps

    Mini SDK JavaScript API library PDF web apps

    A condensed library designed to web modern applications, to quickly export your content html to pdf thanks the famous library in javascript: jsPDF. And a special thanks to the project canvg and html2canvas. Project documentation: http://ulmdevice.altervista.org/pdfapihtml5/#documentation ========== Also available service for Angular 7+: http://ulmdevice.altervista.org/pdfjsapi/ Mobile Applications: http://bit.ly/1MrlgKk Opera add-on: http://bit.ly/1kkMhTa
    Downloads: 0 This Week
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