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
    clmtrackr

    clmtrackr

    Javascript library for precise tracking of facial features

    clmtrackr is a javascript library for fitting facial models to faces in videos or images. It currently is an implementation of constrained local models fitted by regularized landmark mean-shift, as described in Jason M. Saragih's paper. clmtrackr tracks a face and outputs the coordinate positions of the face model as an array. The library provides some generic face models that were trained on the MUCT database and some additional self-annotated images. Check out clmtools for building your own models. For tracking in video, it is recommended to use a browser with WebGL support, though the library should work on any modern browser. For some more information about Constrained Local Models, take a look at Xiaoguang Yan's excellent tutorial, which was of great help in implementing this library.
    Downloads: 0 This Week
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  • 2
    co

    co

    The ultimate generator based flow-control goodness for nodejs

    co is a small Node.js library that popularized generator-based coroutines to write asynchronous code that looks synchronous. By yielding promises (or thunks) inside a generator function, co resumes execution when the asynchronous work completes, eliminating deeply nested callbacks. It supports yielding arrays or objects of promises to run tasks concurrently, and it propagates errors naturally through try/catch, making control flow easier to reason about. The library arrived before async/await existed in Node.js and influenced how developers thought about structuring asynchronous programs. Even in a world with native async functions, co remains a concise illustration of cooperative concurrency and still works where generator syntax is preferred. Its API surface is intentionally tiny: wrap a generator, yield work, and let co drive the promise plumbing behind the scenes.
    Downloads: 0 This Week
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  • 3
    codebird

    codebird

    A Twitter library in multiple programming languages

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  • 4

    corn-converter

    Bidirectional java type converters (JSON, XML, ...)

    Corn Converter module contains bidirectional java type converters to different target types like JSON and XML. It's simple, flexible and powerful enough satisfy serialization, de-serialization requirements including complex bean types and collections.
    Downloads: 0 This Week
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  • 5
    This is a JavaScript library which can be used across platforms for developing desktop and web widgets. The purpose is that the common functionalities like setting/getting preferences etc can be wrapped in a function that can be used across platforms
    Downloads: 0 This Week
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  • 6
    csg.js

    csg.js

    Constructive solid geometry on meshes using BSP trees in JavaScript

    csg.js is a JavaScript library implementing constructive solid geometry (CSG) operations on polygonal meshes using BSP trees. With CSG, you build complex 3D shapes by combining primitives using Boolean operations like union, subtract, and intersect. The library focuses on clarity and correctness: its implementation is intentionally concise and readable so developers can understand the algorithm, while still correctly handling tricky edge cases such as overlapping coplanar polygons. A WebGL-based demo shows how two solids can be combined interactively in the browser, making it a great educational tool for learning CSG concepts. The API allows you to create primitives (cubes, spheres, etc.) and then combine or transform them programmatically, producing new mesh geometry for rendering or export. Because it is dependency-light and pure JavaScript, csg.js can be integrated into custom modeling tools, CAD-like apps, games, or procedural modeling pipelines running in the browser or Node.
    Downloads: 0 This Week
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  • 7
    dat.GUI

    dat.GUI

    dat.gui is a lightweight controller library for JavaScript

    A lightweight graphical user interface for changing variables in JavaScript. The easiest way to use dat.GUI in your code is by using the built source at build/dat.gui.min.js. These built JavaScript files bundle all the necessary dependencies to run dat.GUI. If you're using a server with a Content Security Policy in place that blocks 'unsafe-inline', you will have problems when dat.gui.js tries to inject style information. To get around this, load 'build/dat.gui.css' as an external style sheet. With the npm run build script you can build development and production version of scripts. And with the npm run dev script you can build development version of script and watch for changes.
    Downloads: 0 This Week
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  • 8
    dc.js

    dc.js

    Multi-Dimensional charting built to work natively with crossfilter

    dc.js is a javascript charting library with native crossfilter support, allowing highly efficient exploration on large multi-dimensional datasets (inspired by crossfilter's demo). It leverages d3 to render charts in CSS-friendly SVG format. Charts rendered using dc.js are data driven and reactive and therefore provide instant feedback to user interaction. Dimensional charting built to work natively with crossfilter rendered using d3.js. In dc.js, each chart displays an aggregation of some attributes through the position, size, and color of its elements, and also presents a dimension which can be filtered. When the filter or brush changes, all other charts are updated dynamically, using animated transitions. dc.js is an easy yet powerful javascript library for data visualization and analysis in the browser and on mobile devices.
    Downloads: 0 This Week
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  • 9
    decimal.js

    decimal.js

    An arbitrary-precision Decimal type for JavaScript

    decimal.js is a JavaScript library that provides an arbitrary-precision decimal data type designed to overcome the limitations of native floating-point arithmetic in JavaScript. It allows developers to perform accurate calculations with numbers of virtually unlimited precision, making it especially useful for financial, scientific, and high-precision applications. Unlike standard JavaScript numbers, which can produce rounding errors due to binary representation, decimal.js ensures consistent and predictable results by operating on decimal values directly. The library defines a Decimal constructor that accepts numbers, strings, or existing Decimal instances, enabling flexible usage across different input types. It supports a wide range of mathematical operations, including arithmetic, logarithmic, trigonometric, and exponential functions, making it significantly more comprehensive than simpler numeric libraries.
    Downloads: 0 This Week
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  • 10
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  • 11
    Application to create PDF document on the fly from any source file format(PRN,HTML,TEXT,CSV) with complete mailing system and reports module. It's made over following library Pdf - IText Web Server- Simple Frame work Database- H2
    Downloads: 0 This Week
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  • 12
    electron-vue-admin

    electron-vue-admin

    Vue electron admin template web

    Electron-vue-admin is an admin dashboard scaffold that bundles Vue.js with Electron to deliver a desktop admin experience. It is based on the well-known vue-admin-template and generated with electron-vue tooling via Vue CLI. The project aims to let teams reuse familiar Vue components, routing, and permission models while packaging the app as a cross-platform desktop application. Because it inherits from the template ecosystem, you can incorporate patterns like Element UI components, axios-based API calls, and role-based navigation. It’s useful for internal tools that benefit from native-like desktop packaging, offline capabilities, or OS-level integrations. The repository provides a recognizable structure so Vue developers can get productive quickly without learning a new desktop-specific framework from scratch.
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  • 13
    embed-js

    embed-js

    A lightweight plugin to embed emojis, media, maps, tweets, code, etc.

    A lightweight JavaScript plugin to embed emojis, media, maps, tweets, code and services. embed.js was developed with a modern JavaScript workflow in mind. To use it, it's recommended you have a build system in place that can transpile ES6, and bundle modules. But at the same time, you get an already transpiled version to make your development easier. If you’re using npm package manager with a module bundler like Webpack or Browserify to consume CommonJS modules, you can use the default UMD build of the plugin by simply requiring it. The render() method renders the resulting string in the block. The .render() method also returns a promise. Optionally you can also pass a string which will be processed by the plugin.
    Downloads: 0 This Week
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  • 14
    emojilib

    emojilib

    Emoji keyword library

    Emoji keyword library. Make emoji searchable with this keyword library. If you are looking for the unicode emoji dataset, including version, grouping, ordering, and skin tone support flag, check out unicode-emoji-json.
    Downloads: 0 This Week
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  • 15
    emojipacks

    emojipacks

    CLI to bulk upload emojis to your Slack

    CLI to bulk upload emojis to your Slack! Note you must have node and npm installed. If you don't, go to nodejs.org and follow the install instructions there. A file named batchUploadExample.sh is provided for your reference. Edit this file change the subdomain, email, and password parameters to your own and save it as batchUpload.sh or something similar. It optionally takes an argument for the directory path that contains your yaml files. If this is not provided './packs' will be used by default.
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  • 16
    emotion

    emotion

    CSS-in-JS library designed for high performance style composition

    Emotion is a library designed for writing css styles with JavaScript. It provides powerful and predictable style composition in addition to a great developer experience with features such as source maps, labels, and testing utilities. Both string and object styles are supported. There are two primary methods of using Emotion. The first is framework agnostic and the second is for use with React. Similar to the style prop, but also has support for auto vendor-prefixing, nested selectors, and media queries. Allows developers to skip the styled API abstraction and style components and elements directly. The css prop also accepts a function that is called with your theme as an argument allowing developers easy access to common and customizable values. Reduces boilerplate when composing components and styled with emotion. Server side rendering with zero configuration.
    Downloads: 0 This Week
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  • 17
    epic-spinners

    epic-spinners

    Easy to use CSS spinners collection with Vue.js integration

    Easy to use CSS spinners collection with Vue.js integration. Developed by Epicmax. Subscribe to our newsletter to get Epic Spinners updates, our team's stories, and Vue.js materials hand-picked by Epicmax. We've collected and crafted a rich collection of spinners animated with CSS which are available both as HTML/CSS code snippets and easily customizable vue.js components. View demo to see vue.js components usage examples and HTML/CSS source code. To use pure HTML/CSS version, visit our gallery and click any spinner to see its HTML/CSS source code. You can easily configure spinners' size, color, and animation speed.
    Downloads: 0 This Week
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  • 18
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  • 19
    ezUser is a simple framework for adding user authentication and registration to your PHP website. Simply include ezUser.php in your project and a single line of code will enable your site to accept user registrations and logins. That's it!
    Downloads: 0 This Week
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  • 20
    frontend-mentor-challenges

    frontend-mentor-challenges

    My submissions for the Frontend Mentor Challenges

    The frontend-mentor-challenges repository contains the author’s submissions to the platform Frontend Mentor — which offers structured UI/UX layout challenges (landing pages, components, form designs) for front-end developers. The codebase shows solutions in HTML, CSS, Javascript, with each challenge typically including an original design file plus the author’s implementation. It’s a great way to practice responsive layouts, CSS grid/flexbox mastery, UI refinement, and build portfolio-worthy front-end snapshots. The README shows that the author has live demos and even a YouTube playlist of walkthroughs. This sort of repository is useful for demonstrating front-end craftsmanship, CSS/HTML mastery, and attention to design detail. It also helps reinforce iteration on design challenges and small reusable components.
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  • 21
    gChartToolPHP

    gChartToolPHP

    A PHP Wrapper for the Google Chart Tool Class

    gChartToolPHP provides a simple, comprehensive wrapper to easily produce Google client-side charts. graphs and tables using only PHP code, and embed them in your own pages. It provides support for all the current Google chart formats including the more complex charts such as bubbles, gauges and scatter charts. In addition, a Google Toolbar can be added to the chart to allow easy export of the data Data can be supplied to the chart in the following ways: 1. Static data sets embedded in the page 2. Dynamically created PHP array data 3. An AJAX call to a Server program 4. A Google Spreadsheet
    Downloads: 0 This Week
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  • 22
    GetHTTP is a very easy to use ajax library. it basicly consists of two functions syncHTTP and asyncHTTP. The goal of the project is to make ajax available to anyone, without any knowladge of the XMLHttpRequest object.
    Downloads: 0 This Week
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  • 23
    gitmoji

    gitmoji

    An emoji guide for your commit messages

    Gitmoji is an initiative to standardize and explain the use of emojis on GitHub commit messages. Gitmoji is an emoji guide for GitHub commit messages. Aims to be a standarization cheatsheet, guide for using emojis on GitHub's commit messages. Using emojis on commit messages provides an easy way of identifying the purpose or intention of a commit with only looking at the emojis used. As there are a lot of different emojis I found the need of creating a guide that can help to use emojis easier. This project is Open Source, that means everyone can participate, suggesting, discussing and adding new emojis. Take a look at the contributing section and guidelines for contributing. An easy solution for using gitmoji from your command line, is to install gitmoji-cli. A gitmoji interactive client for using emojis on commit messages. This project is a static website built with Next.js. All the gitmojis displayed are rendered from a JSON file.
    Downloads: 0 This Week
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  • 24
    glfx.js

    glfx.js

    An image effects library for JavaScript using WebGL

    glfx.js is a JavaScript image-effects library that uses WebGL to apply real-time filters and transformations directly in the browser. It exposes a simple API where images are uploaded into GPU textures, processed with shader-based filters, and rendered to a WebGL canvas. Because the work is done on the GPU, many effects that would be too slow in pure JavaScript (like complex blurs, lens effects, or tilt-shift) can run interactively, even on large images. The library is structured around three components: textures (image sources), filters (shader pipelines), and canvases (render targets), making it easy to compose multiple effects. A demo page showcases a variety of filters, from basic brightness/contrast adjustments to more advanced distortions and color manipulations. glfx.js remains a handy reference and solution for anyone needing client-side photo editing, visual effects, or generative graphics powered by WebGL.
    Downloads: 0 This Week
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  • 25
    gray

    gray

    Make an image grayscale in all browsers

    Make an image gray in all browsers. CSS Styles and jQuery plugin to display images in grayscale.
    Downloads: 0 This Week
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