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

    Javascript Moony Parser

    library: parsing text by given grammar in javascript

    This is a javascript library for parsing texts. The library accepts minimalistic moony grammar language and parses given text by the grammar. It is an implementation of "Earley" parser which makes it context free grammar complete. Instructions are bundled in download.
    Downloads: 0 This Week
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  • 2
    A simple java library for JSON serialization.
    Downloads: 0 This Week
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  • 3
    Keen UI

    Keen UI

    A lightweight Vue.js UI library with a simple API

    Keen UI is a Vue.js UI library with a simple API, inspired by Google's Material Design. Keen UI is not a CSS framework. Therefore, it doesn't include styles for a grid system, typography, etc. Instead, the focus is on interactive components that require Javascript. You should be able to use Keen UI with any page layout, structure, or CSS framework.
    Downloads: 0 This Week
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  • 4
    Play line by line with audio on page, demo: http://q3world.sourceforge.net
    Downloads: 0 This Week
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  • 5
    Knwl.js

    Knwl.js

    A .js library for parsing text for specific information

    Knwl.js is a Javascript library that parses through text for dates, times, phone numbers, emails, places, and more. Parser plugins are what make Knwl.js tick and give it new parsing abilities. There are many already available under ./default_plugins for a number of tasks. If you're interested in developing plugins for Knwl.js, ./plugin_development.md is a great place to start. You can optionally specify a language in the first parameter. This helps plugins identify and better suit particular languages. A packaged version of Knwl.js for the browser with default plugins is available in the ./dist directory. What's awesome about the new version of Knwl.js is that it makes it much easier for anyone with a little knowledge of JS to build plugins. These plugins offer new parsing abilities for Knwl.js that otherwise wouldn't exist.
    Downloads: 0 This Week
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  • 6
    Krajee bootstrap-star-rating

    Krajee bootstrap-star-rating

    A simple yet powerful JQuery star rating plugin with fractional rating

    A simple yet powerful JQuery star rating plugin for Bootstrap that supports advanced features like fractional star fill and RTL input support. Developed with a focus on utilizing pure CSS-3 styling to render the control. The plugin uses Bootstrap markup and styling by default, but it can be overridden with any other CSS markup. Ability to size the rating control to any size including the stars, caption, and clear button. Five prebuilt size templates are available xl, lg, md, sm, and xs. However one can have their own size configured through a simple CSS manipulation. You can use the HTML 5 number input for polyfill and the plugin will automatically use the number attributes like min, max, and step. However, number inputs have a problem with decimal values on the Chrome Browser. Specifically uses Bootstrap 3.x styles & glyphs. Can be combined to work better for Bootstrap-styled projects (or input group addons).
    Downloads: 0 This Week
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  • 7
    LABjs

    LABjs

    Loading And Blocking JavaScript

    LABjs is a lightweight JavaScript loader focused on speeding up page performance by controlling how and when scripts download and execute. It provides an expressive API to load multiple files in parallel while guaranteeing execution order, so dependent scripts don’t break. By decoupling fetch from execute, it avoids the blocking behavior of traditional tags and helps reduce perceived load time. LABjs embraces a “load groups, then wait” model that makes dependency management clear without a separate build step. It’s designed to work across a wide range of browsers, including older ones, which is why it relies on robust feature detection and time-tested loading techniques. The library is intentionally small and framework-agnostic, so it can be dropped into almost any stack to orchestrate client-side assets more predictably.
    Downloads: 0 This Week
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  • 8
    LINQ to Javascript...
    Downloads: 0 This Week
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  • 9
    Laravel QuestionAnswer

    Laravel QuestionAnswer

    Vote based Question & Answer site built using Laravel 5.4

    Vote-based Question and answer site built using Laravel 5.4, material design, x-editable, jQuery Upvote, and email/database notifications. Registered users can submit questions, answer questions, vote on questions & answers, and when an answer is posted to a question the author is notified via email. Users will also be notified about votes, but only viewable in their profile.
    Downloads: 0 This Week
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  • 10
    Learning Prompt

    Learning Prompt

    Free prompt engineering online course

    Learning-Prompt is a curated repository of prompts, techniques, and instructional patterns designed to help people construct better prompts for AI systems, including generation, reasoning, and debugging tasks. It collects examples of effective prompt formats, chains of thought, strategy scaffolds, and comparative methods that help yield consistent, high-quality results. The project also includes meta-guidance: reflections on prompt failures, tips for prompt tuning, ways to mitigate model bias or misinterpretation, and how to adapt prompts for different AI capabilities. Because prompt design is a skill under continuous iteration, the repo encourages contributions of new prompt recipes, evaluations, and domain-specific adaptations. It’s intended for educators, developers, and prompt engineers who want a living toolkit rather than static advice. Over time it serves as both a reference and playground for emergent prompt techniques.
    Downloads: 0 This Week
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  • 11

    Libraries for Vue

    Vue Libraries

    Libraries for Vue - Grid. Sortable grid with pagination and column filtering.
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  • 12
    List.js

    List.js

    Library for adding search, sort, filters and flexibility to tables

    Tiny, invisible and simple, yet powerful and incredibly fast vanilla JavaScript that adds search, sort, filters and flexibility to plain HTML lists, tables, or anything. List.js can be used in three different ways. It can be on existing HTML, it can create it's own HTML or a combination of both methods. Works both lists, tables and almost anything else. E.g. <div>,<ul>,<table>, etc. Simple templating system that adds possibility to add, edit, remove items. Perfect library for adding search, sort, filters and flexibility to tables, lists and various HTML elements. Built to be invisible and work on existing HTML. Simple and invisible. Easy to apply to existing HTML. No dependencies. Fast, and tiny (5KB minified&gzip). It can handle thousands of items. It is easy to add search input and sort buttons with just a few classes and attributes in your HTML. ‘Automagical’ because List.js registers the event handlers, searches/sorts and updates the list for you.
    Downloads: 0 This Week
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  • 13
    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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  • 14
    LombokCharts

    LombokCharts

    Canvas and SVG renderers, LTTB decimation,real-time streaming layer

    LombokCharts A zero-dependency charting library for the browser. It pairs a small grammar-of-graphics core (Data → Scale → Mark) with pluggable Canvas and SVG renderers, LTTB decimation, and a real-time streaming layer — so the same API draws a five-point bar chart or a five-million-point line without changing shape.
    Downloads: 0 This Week
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  • 15
    MEAN

    MEAN

    For simple and scalable fullstack js applications

    The MEAN stack uses Mongo, Express, Angular(6) and Node for simple and scalable fullstack js applications. The mean stack is intended to provide a simple and fun starting point for cloud native fullstack javascript applications. MEAN is a set of Open Source components that together, provide an end-to-end framework for building dynamic web applications; starting from the top (code running in the browser) to the bottom (database). The stack is made up of MongoDB, with document database, used by your back-end application to store its data as JSON (JavaScript Object Notation) documents. Also with Express (sometimes referred to as Express.js), with back-end web application framework running on top of Node.js. As well as Angular (formerly Angular.js), which is a front-end web app framework that runs your JavaScript code in the user's browser, allowing your application UI to be dynamic.
    Downloads: 0 This Week
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  • 16
    MRN

    MRN

    A Material Design style React Native component library.

    MRN, short for Material React Native, is a React Native component library that brings Google’s Material Design principles into mobile application development using JavaScript. It provides a set of UI components styled according to Material Design guidelines, enabling developers to create consistent and visually familiar interfaces on Android devices. The library includes various UI elements such as buttons, cards, lists, and navigation components, all designed to align with Material Design aesthetics. MRN focuses on simplifying the process of building native-like mobile interfaces within React Native, reducing the need for manual styling and design implementation. It supports Android starting from API level 16, although it does not include full support for iOS, which limits its cross-platform reach. The project is no longer actively maintained, but it still serves as a useful reference or starting point for developers exploring Material Design in React Native.
    Downloads: 0 This Week
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  • 17
    Magnificent.js

    Magnificent.js

    Zoom responsively, images & more, w/ jQuery

    Zoom responsively. A jQuery plugin for responsive zoom of images & more. Include two elements, one with a mag-thumb attribute for thumbnail content and one with a mag-zoom attribute for zoomed content, the values of each attribute should be a unique identifier used to wire them together.
    Downloads: 0 This Week
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  • 18
    The Maksi is a library that provides scripting infrastructure for Qt applications. The scripting languages are implemeted with plugins, and scripts are defined in xml config. In addition, the Maksi provides object model, inspired by XML Schema.
    Downloads: 0 This Week
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  • 19
    Give your addresses a face. MapFace is a set of JSF Facelets components for integrating the Google Maps API into any JSF application.
    Downloads: 0 This Week
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  • 20
    Maplace.js

    Maplace.js

    A Google Maps Javascript plugin for jQuery

    Helps you to embed Google Maps into your website, and quickly create markers and control menus for the locations on the map. Download the latest version of Maplace.js and include the Google Maps API v3 along with jQuery.
    Downloads: 0 This Week
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  • 21

    MapsBing

    Agregar Bing Maps facilmente a tu projecto web

    Usar Bing Maps en su proyecto web puede ser mmas facil con esta libreria. Solo necesitas tener tu Api Key de Microssft y ya tendras las principales funcionalidades de Bing Maps en tu web. Con esta libreria veras que fail es el poder incluir mapas en tus proyectos, buscar direcciones, o trazar rutas. Ademas tambien soporta geo localizaci'on, para saber desde donde conecta el usuario. Mas informacion en https://aprende-a-programar.com/b/Mapas-con-Bing/
    Downloads: 0 This Week
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  • 22
    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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  • 23
    Material Cards

    Material Cards

    Card style based on Google Material color palette

    Simple user card based on Google Material Color palette and jQuery.
    Downloads: 0 This Week
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  • 24
    Material Design

    Material Design

    Material design for AngularJS

    AngularJS Material is an implementation of Google's Material Design Specification (2014-2017). This project provides a set of reusable, well-tested, and accessible UI components for AngularJS developers. AngularJS Material has entered the Long Term Support (LTS) period. The AngularJS Material library is a mature and stable product that is ready for production use. Developers should note that AngularJS Material works only with AngularJS 1.x. AngularJS 1.x is now in Long Term Support (LTS) mode, so, current development efforts are focused on bug fixes, accessibility, performance, and minor enhancements. Material Design is a specification for a unified system of visual, motion, and interaction design that adapts across different devices. Our goal is to deliver a lean, lightweight set of AngularJS-native UI elements that implement the material design specification for use in AngularJS single-page applications (SPAs).
    Downloads: 0 This Week
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  • 25
    Matter

    Matter

    Material Design Components in Pure CSS

    Material Design Components in Pure CSS. Materializing HTML at just one class per component.
    Downloads: 0 This Week
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