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.

  • Simplify Purchasing For Your Business Icon
    Simplify Purchasing For Your Business

    Manage what you buy and how you buy it with Order.co, so you have control over your time and money spent.

    Simplify every aspect of buying for your business in Order.co. From sourcing products to scaling purchasing across locations to automating your AP and approvals workstreams, Order.co is the platform of choice for growing businesses.
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  • AestheticsPro Medical Spa Software Icon
    AestheticsPro Medical Spa Software

    Our new software release will dramatically improve your medspa business performance while enhancing the customer experience

    AestheticsPro is the most complete Aesthetics Software on the market today. HIPAA Cloud Compliant with electronic charting, integrated POS, targeted marketing and results driven reporting; AestheticsPro delivers the tools you need to manage your medical spa business. It is our mission To Provide an All-in-One Cutting Edge Software to the Aesthetics Industry.
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  • 1
    simpleParallax.js

    simpleParallax.js

    Simple and tiny JavaScript library that adds parallax animations

    simpleParallax.js is a very simple and tiny Vanilla JS library that adds parallax animations on any image. Where it may be laborious to get results through other plugins, simpleParallax.js stands out for its ease and its visual rendering. The parallax effect is directly applied to image tags, there is no need to use background images.
    Downloads: 8 This Week
    Last Update:
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  • 2
    AboutLibraries

    AboutLibraries

    AboutLibraries automatically collects all dependencies and licenses

    .. collects all dependency details including licenses at compile time, and offers simple APIs to visualize these in the app. No runtime overhead. Strong caching. Any gradle dependency is supported.
    Downloads: 7 This Week
    Last Update:
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  • 3
    Article Extractor

    Article Extractor

    To extract main article from given URL with Node.js

    A Node.js library for extracting main content from web articles, removing unnecessary clutter like ads and navigation elements.
    Downloads: 7 This Week
    Last Update:
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  • 4
    Awesome Prometheus Alerts

    Awesome Prometheus Alerts

    Collection of Prometheus alerting rules

    Awesome Prometheus Alerts is a collection of pre-configured Prometheus alert rules, help users set up effective alerting for infrastructure monitoring.
    Downloads: 7 This Week
    Last Update:
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  • Award-Winning Medical Office Software Designed for Your Specialty Icon
    Award-Winning Medical Office Software Designed for Your Specialty

    Succeed and scale your practice with cloud-based, data-backed, AI-powered healthcare software.

    RXNT is an ambulatory healthcare technology pioneer that empowers medical practices and healthcare organizations to succeed and scale through innovative, data-backed, AI-powered software.
    Learn More
  • 5
    ECharts

    ECharts

    A powerful, interactive charting and visualization library for browser

    ECharts is a free and open source charting and visualization library that gives you an easy way to add interactive, intuitive, custom charts to your commercial products, projects, presentations and more. It offers a rich set of features that includes rendering ability for ten-million-level data, Wechart and Powerpoint support, multi-dimension data analysis, and more. It also has a number of extensions for various applications. ECharts is written in pure JavaScript, and is based on zrender, a new and lightweight canvas library.
    Downloads: 7 This Week
    Last Update:
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  • 6
    Emoji Mart

    Emoji Mart

    One component to pick them all

    Data required for the picker to work has been completely decoupled from the library. That gives developers the flexibility to better control their app bundle size and let them choose how and when this data is loaded. Callback when the Add custom emoji button is clicked. The button will only be displayed if this callback is provided. It is displayed when search returns no results. You can use custom emojis by providing an array of categories and their emojis. Emojis also support multiple skin tones and can be GIFs or SVGs. You can use custom category icons by providing an object with the category name as key and the icon as value. Currently supported formats are svg string and src. First, you need to make sure data has been initialized. You need to call this only once per page load. Note that if you call init like this, you don’t necessarily need to include data in your Picker props. It doesn’t hurt either, it will noop.
    Downloads: 7 This Week
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  • 7
    Gantt-elastic - Javascript Gantt Chart

    Gantt-elastic - Javascript Gantt Chart

    Gantt Chart [ javascript gantt chart, gantt component, vue gantt)

    Gantt Chart, JavaScript Gantt chart, Gantt component, vue Gantt, vue Gantt chart, responsive Gantt, project manager, vue projects.
    Downloads: 7 This Week
    Last Update:
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  • 8
    Globby

    Globby

    User-friendly glob matching

    Globby is a user-friendly glob matching library for Node.js, built on top of fast-glob, offering enhanced features for file pattern matching.
    Downloads: 7 This Week
    Last Update:
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  • 9
    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: 7 This Week
    Last Update:
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  • The Most Powerful Software Platform for EHSQ and ESG Management Icon
    The Most Powerful Software Platform for EHSQ and ESG Management

    Addresses the needs of small businesses and large global organizations with thousands of users in multiple locations.

    Choose from a complete set of software solutions across EHSQ that address all aspects of top performing Environmental, Health and Safety, and Quality management programs.
    Learn More
  • 10
    Jspreadsheet CE

    Jspreadsheet CE

    Javascript plugin to create web-based tables & spreadsheets

    Jspreadsheet CE is a lightweight Vanilla JavaScript data grid plugin to create amazing web-based interactive HTML tables, and spreadsheets compatible data grid with other spreadsheet software. You can create an online spreadsheet table from a JS array, JSON, CSV or XSLX files. You can copy from excel and paste straight to your Jspreadsheet CE spreadsheet and vice versa. It is very easy to integrate any third party JavaScript plugins to create your own custom columns, custom editors, and customize any feature into your application. Jspreadsheet CE has plenty of different input options through its native column types to cover the most common web-based application requirements. It is a complete solution for web data management. Create amazing applications with Jspreadsheet CE JavaScript spreadsheet.
    Downloads: 7 This Week
    Last Update:
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  • 11
    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: 7 This Week
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  • 12
    Matter

    Matter

    Material Design Components in Pure CSS

    Material Design Components in Pure CSS. Materializing HTML at just one class per component.
    Downloads: 7 This Week
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  • 13
    NiL.JS

    NiL.JS

    JavaScript engine for .NET written in C#

    NiL.JS is a JavaScript engine written in C#, capable of executing ECMAScript 6.0 (ES2015) code. It allows embedding JavaScript execution within .NET applications, providing a bridge between C# and JavaScript.​
    Downloads: 7 This Week
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  • 14
    Notifme SDK

    Notifme SDK

    A Node.js library to send all kinds of transactional notifications

    A unified messaging API that enables sending notifications via multiple channels such as email, SMS, push, and chat.
    Downloads: 7 This Week
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  • 15
    Pac-Man

    Pac-Man

    Pac-Man game written in HTML5 + CSS3 + jQuery with Canvas

    Pac-Man game written in HTML5 + CSS3 + jQuery with Canvas. This WebApp is a Responsive Web Design (RWD) website.
    Downloads: 7 This Week
    Last Update:
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  • 16
    Pattern Lab Node

    Pattern Lab Node

    The Node version of Pattern Lab

    This monorepo contains the core of Pattern Lab / Node and all related engines, UI kits, plugins, and utilities. Pattern Lab helps you and your team build thoughtful, pattern-driven user interfaces using atomic design principles.
    Downloads: 7 This Week
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  • 17
    Pushy jQuery

    Pushy jQuery

    Pushy is a responsive off-canvas navigation menu using CSS transforms

    Pushy is a responsive off-canvas navigation menu using CSS transforms & transitions. This project was inspired by the off-canvas navigation menu seen on Medium. Pushy has been implemented on many sites, check them out! Feel free to contact me if you use Pushy in one of your websites. Pushy has been featured on the Treehouse Show and in a book.
    Downloads: 7 This Week
    Last Update:
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  • 18
    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: 7 This Week
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  • 19
    Size Limit

    Size Limit

    Calculate the real cost to run your JS app or lib

    Size Limit is a JavaScript performance budget tool that measures the real cost of your JavaScript bundle and prevents regressions by enforcing limits in CI. It calculates not just raw bundle size, but also download and execution time under configurable network conditions, giving a more realistic sense of what users experience. The tool is modular: it offers a CLI and multiple plugins (file, webpack, time) plus presets tailored to different use cases, from big single-page apps to small npm libraries. When integrated with GitHub Actions, CircleCI, or other CI systems, it runs on every commit or pull request, failing the pipeline if a change exceeds the configured budget. It can also annotate pull requests with comments that highlight how the bundle changed, making performance regressions visible to reviewers early. With the --why flag, size-limit can analyze what contributes most to bundle size and show a dependency breakdown (using Statoscope).
    Downloads: 7 This Week
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  • 20
    Superfine

    Superfine

    Absolutely minimal view layer for building web interfaces

    Superfine is a minimal view layer for building web interfaces. Think Hyperapp without the framework—no state machines, effects, or subscriptions, just the absolute bare minimum (1 kB minified+gzipped). Mix it with your favorite state management library or use it standalone for maximum flexibility. When describing how a page looks in Superfine, we don't write markup. Instead, we use the h() and text() functions to create a lightweight representation of the DOM (or virtual DOM for short), and patch() to actually render the DOM. Superfine won't re-create the entire DOM every time we use patch(). By comparing the old and new virtual DOM we are able to change only the parts of the DOM that need to change instead of rendering everything from scratch.
    Downloads: 7 This Week
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  • 21
    anime.js

    anime.js

    JavaScript animation engine

    anime.js is a lightweight JavaScript animation library that allows you to create complex animations with a single, powerful API. It works with just about anything web-based: CSS properties, SVG, DOM attributes and JavaScript Objects. anime.js makes it easy to create layered and complex animations, and gives you full control of timing and triggering events so they move exactly how and when you want them. It supports some of the latest browsers, and offers plenty of examples and demonstrations to get you animating in no time. Animate everything you want simply and easily with anime.js.
    Downloads: 7 This Week
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  • 22
    egjs

    egjs

    Javascript components group that brings easiest way to build web apps

    egjs is Javascript components group that brings easiest and fastest way to build a web application in your way.
    Downloads: 7 This Week
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  • 23
    jCanvas

    jCanvas

    A jQuery plugin that makes the HTML5 canvas easy to work with

    jCanvas is a jQuery plugin that makes the HTML5 canvas easy to work with. jCanvas is a JavaScript library, written using jQuery and for jQuery, that wraps around the HTML5 canvas API, adding new features and capabilities, many of which are customizable. Capabilities include layers, events, drag-and-drop, animation, and much more. The result is a flexible API wrapped up in a sugary, jQuery-esque syntax that brings power and ease to the HTML5 canvas.
    Downloads: 7 This Week
    Last Update:
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  • 24
    lodash

    lodash

    Modern JavaScript utility library delivering modularity & performance

    A modern JavaScript utility library delivering modularity, performance & extras. Lodash makes JavaScript easier by taking the hassle out of working with arrays, numbers, objects, strings, etc. Lodash’s modular methods are great for iterating arrays, objects, & strings, manipulating & testing values, and creating composite functions. Lodash is available in a variety of builds & module formats. Lodash is released under the MIT license & supports modern environments. Review the build differences & pick one that’s right for you. Lodash is available in a variety of builds & module formats. Tested in Chrome 74-75, Firefox 66-67, IE 11, Edge 18, Safari 11-12, & Node.js 8-12.
    Downloads: 7 This Week
    Last Update:
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  • 25
    mongoose-paginate-v2

    mongoose-paginate-v2

    A custom pagination library for Mongoose with customizable labels

    mongoose-paginate-v2 is a pagination library having a page wrapper. The main usage of the plugin is you can alter the return value keys directly in the query itself so that you don't need any extra code for transformation. The initial idea of this plugin is loosely based on the mongoose-paginate package by github.com/edwardhotchkiss/. So this can be considered as an upgraded version of mongoose-paginate with many more options.
    Downloads: 7 This Week
    Last Update:
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