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
    GQLx is a SQL-like query language for Google Doc's spreadsheets. The initial release includes both a Java GUI application as well as a console application - while a demonstration Javascript implementation is available online at http://gqlx.twyst.co.za
    Downloads: 0 This Week
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  • 2
    GTR [gi'tar] General/GTR Tag Replacer Project with the aim of producing js library for automated tag replacing with a stripped set of cross-platform functions and an automated check for reusing installed libs such as Prototype and jQuery.
    Downloads: 0 This Week
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  • 3
    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: 0 This Week
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  • 4
    Genie Alert is a alternate to JavaScript alert windows, with lot of options to customize the title, icons, styles, buttons, button handlers etc.
    Downloads: 0 This Week
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  • 5
    Gijgo

    Gijgo

    Free Javascript Controls

    Gijgo is a set of free for commercial use javascript controls distributed under MIT License. All widgets are high performance, built on top of the jQuery JavaScript Library with built-in support for Bootstrap 4 and Material Design. They are designed to saves you time and scales with your development process.
    Downloads: 0 This Week
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  • 6
    Gio.js

    Gio.js

    A declarative 3D globe data visualization library built with Three.js

    Gio.js is an open source library for web 3D globe data visualization built with Three.js. What makes Gio.js different is that it is simple to use Gio.js to customize a 3D data visualization model in a declarative way, add your own data, and integrate it into your own modern web application. Gio.js is an open source library for web 3D globe data visualization built with Three.js. What makes Gio.js different is that it is simple to use Gio.js to customize a 3D data visualization model in a declarative way, add your own data, and integrate it into your own modern web application. This library is inspired by the Arms Trade Visualization project developed by Michael Chang and presented during Google Ideas INFO 2012. See original post. With Gio.js, it is easy to reproduce this fantastic data visualization model, and integrate it into web applications.
    Downloads: 0 This Week
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  • 7
    Github Contributions

    Github Contributions

    A tool that generates a repository which being pushed into your GitHub

    GitHub Contributions is a Node.js application for generating repositories whose dated commits create designs in a GitHub contribution calendar. It runs a local browser-based interface that guides users through producing the required repository history. After generation, the repository can be pushed to a GitHub account so its commits appear on the profile graph. The application can be installed globally through npm or run from a cloned source directory. Its local server listens on port 9000 and requires Git to be available through the system path. Windows users must ensure that their Git installation exposes its commands correctly. The project is primarily an experimental visualization tool rather than a record of genuine software development activity.
    Downloads: 0 This Week
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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: 0 This Week
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  • 9
    Golden Layout

    Golden Layout

    A multi window layout manager for webapps

    Golden Layout is a JavaScript layout manager designed for building complex, multi-panel web applications with draggable and resizable components. It enables developers to arrange UI elements into flexible layouts that can be dynamically reconfigured by users through drag-and-drop interactions. The system is particularly useful for dashboards, IDE-like interfaces, and data-heavy applications where multiple panels need to coexist and be rearranged. Golden Layout manages component positioning, visibility, and resizing through a structured layout tree, allowing precise control over how elements are displayed. It also supports saving and restoring layouts, enabling persistence of user configurations across sessions. The library integrates with popular frontend frameworks such as Angular and Vue, and includes support for virtual components to bridge framework-specific rendering models.
    Downloads: 0 This Week
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  • 10
    Google Cloud Platform Node.js Samples

    Google Cloud Platform Node.js Samples

    Node.js samples for Google Cloud Platform products

    Google Cloud Platform Node.js Samples repository is a large set of Node.js code examples that demonstrate how to build, deploy, and manage applications using Google Cloud Platform services. It mirrors the structure and purpose of the Python and Go sample repositories, providing developers with practical implementations that complement official documentation. The repository includes examples for a wide variety of services, such as Cloud Run, App Engine, storage systems, and APIs, along with full tutorial applications like the Bookshelf app that showcase end-to-end workflows. Each sample includes setup instructions, dependency installation steps, and execution commands, making it easy for developers to run and modify the code locally. The project also supports modern JavaScript and TypeScript workflows, reflecting current development practices in the Node.js ecosystem.
    Downloads: 0 This Week
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  • 11
    Google Map React

    Google Map React

    Google map library for react that allows rendering components

    Google map library for react that allows rendering components as markers. google-map-react is a component written over a small set of the Google Maps API. It allows you to render any React component on the Google Map. It is fully isomorphic and can render on a server. Additionally, it can render map components in the browser even if the Google Maps API is not loaded. It uses an internal, tweakable hover algorithm - every object on the map can be hovered. It allows you to create interfaces like this example (You can scroll the table, zoom/move the map, hover/click on markers, and click on table rows) In the simple case you just need to add lat and lng props to any child of GoogleMapReact component.
    Downloads: 0 This Week
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  • 12
    Google Style Guides

    Google Style Guides

    Style guides for Google-originated open source projects

    Google Styleguide is a comprehensive collection of coding style guides created and maintained by Google to ensure consistency, readability, and maintainability across its vast array of software projects. These guides define best practices and conventions for writing code in multiple programming languages, from C++ and Python to JavaScript, Go, and Swift. By adhering to these standards, developers can more easily collaborate, review code, and maintain high-quality software across teams and open source contributions. Each guide covers a wide range of topics, including naming conventions, file organization, indentation, documentation, and usage of specific language features. The repository also provides supplementary resources such as an Emacs configuration file for Google’s C++ style and references to related guidelines like Effective Dart and Kotlin Style Guide.
    Downloads: 0 This Week
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  • 13

    HTML Barcode SDK

    HTML and Javascript barcode generation Software Development Kit

    HTML Barcode SDK is a HTML and Javascript barcode generation Software Development Kit (SDK). It creates commonly-used 1 dimensional barcodes like Code 128, Code39, UPCA, EAN13 and others using pure Hypertext Markup Language (HTML) and can be used in a wide variety of browsers without additional browser plug-ins.
    Downloads: 0 This Week
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  • 14
    HTML CSS Course

    HTML CSS Course

    Starter files, final projects, and FAQ for my HTML + CSS course

    HTML CSS Course is the official repository for Jonas Schmedtmann’s Build Responsive Real-World Websites with HTML and CSS course. It contains starter files and final code for the sections and projects included in the course. The repository helps beginners practice semantic HTML, modern CSS, layout systems, responsive design, and real-world website construction. Students can begin with provided starter assets, follow the course lessons, and compare their results against the completed code when troubleshooting. The material is focused on practical frontend fundamentals rather than JavaScript-heavy interactivity. It is especially useful for learners who want to understand how professional static websites are structured, styled, and adapted across screen sizes.
    Downloads: 0 This Week
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  • 15
    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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  • 16
    HTML5 Demos and Examples

    HTML5 Demos and Examples

    Collection of hacks and demos showing capability of HTML5 apps

    HTML5 Demos and Examples is a classic collection of HTML5 experiments and demonstration files created to show the capabilities of modern web APIs and browser technologies during the rise of HTML5. The repository is an archive of interactive examples—ranging from canvas tricks to video, audio, drag-and-drop, WebSockets, and more—that illustrate how HTML, CSS, and JavaScript can combine to build rich, browser-centric experiences without plugins. Each demo is a self-contained piece of code you can open, explore, and learn from, and the collection was curated to help developers grasp emerging standards at a time when HTML5 was gaining traction and not yet ubiquitous. Though no longer actively maintained, the archive still contains hundreds of creative examples that can teach fundamentals and spur experimentation with web features. Developers historically used it as a reference when testing browser support for features or teaching newcomers how specific APIs behave in real code.
    Downloads: 0 This Week
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  • 17
    HeyUI.ext

    HeyUI.ext

    UI Toolkit for Web, Vue3.0

    HeyUI.ext is a comprehensive UI component library built for Vue.js that provides a wide range of reusable components and tools for developing modern web applications with efficiency and consistency. Designed as a full UI toolkit rather than a minimal component set, it includes elements for forms, tables, modals, navigation, and data handling, making it suitable for building complex interfaces such as dashboards and admin panels. The library emphasizes simplicity and speed, allowing developers to quickly assemble functional interfaces while maintaining scalability as projects grow. It supports modern development workflows through npm installation as well as CDN usage, enabling both lightweight experimentation and full-scale application integration. HeyUI also includes features such as validation, internationalization, and advanced components like trees, selectors, and date pickers, which help streamline common frontend tasks.
    Downloads: 0 This Week
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  • 18
    Highland

    Highland

    High-level streams library for Node.js and the browser

    Highland is a JavaScript library designed to simplify working with streams and asynchronous data flows by providing a functional programming interface on top of Node.js streams. It allows developers to process data in a declarative and composable way, treating streams as sequences that can be transformed using familiar functional patterns such as map, filter, reduce, and flatMap. The library abstracts away much of the complexity of handling backpressure and asynchronous callbacks, enabling developers to focus on data transformation logic rather than low-level stream management. Highland supports both synchronous and asynchronous sources, including arrays, events, promises, and Node streams, making it highly versatile. It also emphasizes lazy evaluation, meaning that data is processed only when needed, improving performance and efficiency in large data pipelines.
    Downloads: 0 This Week
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  • 19
    Highway

    Highway

    Highway - A Modern Javascript Transitions Manager

    Highway is a lightweight (2.5ko gzipped), easy-to-use, flexible, and modern library to create AJAX navigations with animations on websites. Don't bother about all the processes behind the scenes and focus on creative animations.
    Downloads: 0 This Week
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  • 20
    Hiring Without Whiteboards

    Hiring Without Whiteboards

    Companies that don't have a broken hiring process

    Hiring-without-whiteboards is a curated list of companies and teams that avoid traditional "whiteboard" interviews, instead focusing on realistic and practical evaluation methods. In this context, "whiteboards" symbolizes outdated or unhelpful computer science trivia questions often criticized in technical interviews. The project highlights organizations that emphasize interviewing techniques more aligned with actual day-to-day work, such as collaborative problem-solving, pair programming, or take-home assignments. It encourages a shift away from brainteasers, riddles, or puzzle-based interviews, which can create unnecessary barriers for candidates. The repository not only provides a resource for job seekers looking for fairer interview processes but also offers guidance for companies seeking to improve their hiring practices. With community contributions, it continues to grow as a reference for employers and applicants who value practical, respectful, & effective technical evaluation.
    Downloads: 0 This Week
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  • 21
    Hittest.js (PNG Collision Detection)

    Hittest.js (PNG Collision Detection)

    Javascript hitTest on tranparent PNG with collision game sample

    Javascript hitTest on tranparent PNG with collision detection game sample
    Downloads: 0 This Week
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  • 22
    Hotkeys

    Hotkeys

    A robust Javascript library for capturing keyboard input

    HotKeys.js is an input capture library with some very special features, it is easy to pick up and use, has a reasonable footprint (~3kb) (gzipped: 1.73kb), and has no dependencies. It should not interfere with any JavaScript libraries or frameworks. You will need Node.js installed on your system. Or manually download and link hotkeys.js in your HTML, It can also be downloaded via UNPKG. react-hotkeys is the React component that listen to keydown and keyup keyboard events, defining and dispatching keyboard shortcuts. Detailed use method please see its documentation react-hotkeys. React hook for using keyboard shortcuts in components. Make sure that you have at least version 16.8 of react and react-dom installed, or otherwise hooks won't work for you. The following special keys can be used for shortcuts: backspace, tab, clear, enter, return, esc, escape, space, up, down, left, right, home, end, page up, pagedown, del, delete and f1 through f19.
    Downloads: 0 This Week
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  • 23
    Hotkeys JS

    Hotkeys JS

    A robust Javascript library for capturing keyboard input

    hotkeys-js is a tiny, framework-agnostic library for binding keyboard shortcuts in the browser, from simple key presses to complex combos and sequences. It provides a declarative API to register handlers like ctrl+k, shift+alt+p, or g g, and it normalizes key behavior across major browsers. The library includes scoping, so the same shortcut can trigger different actions depending on page context, and it offers filters to ignore inputs when the user is typing in form fields. You can enable or disable groups of shortcuts dynamically, making it well suited for SPAs and dashboard apps. Because it has no external dependencies and a small footprint, it drops easily into existing codebases. Its focus on developer ergonomics makes defining, managing, and cleaning up shortcuts straightforward.
    Downloads: 0 This Week
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  • 24
    How-To-Ask-Questions-The-Smart-Way

    How-To-Ask-Questions-The-Smart-Way

    Correctly propose technical questions and get the answers you want

    The How-To-Ask-Questions-The-Smart-Way project is a widely recognized guide that teaches developers how to communicate effectively when seeking help in technical communities. It focuses on improving the quality of questions by emphasizing clarity, context, and effort before asking for assistance. The document explains common mistakes, such as vague descriptions or lack of research, and provides strategies for formulating precise and useful questions. It also highlights the importance of respecting the time and expertise of others, encouraging a culture of constructive collaboration. The guide is particularly valuable for beginners who are learning how to interact in open-source communities and forums. By improving communication, it increases the likelihood of receiving helpful and accurate responses. Overall, it serves as a foundational resource for effective problem-solving and collaboration in software development.
    Downloads: 0 This Week
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  • 25
    Javascript library to check in a web page if an user is active or idle, action detected by mouse move or key down, depending user's state linked action will be launched more or less often.
    Downloads: 0 This Week
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