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
    Trip.js

    Trip.js

    Trip.js is a plugin that can help you customize a tutorial trip easily

    Trip.js is a plugin that can help you customize a tutorial trip easily with more flexibility. Right now Trip.js supports lots of useful stuff like keyboard binding, animations, changing themes ... etc. If you want to highly customize your own tutorial trip, then Trip.js is definitely worth giving it a try.
    Downloads: 0 This Week
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  • 2

    TundraCoffee

    Fast but configurable CoffeeScript Web Framework

    A framework/library to accelerate the creation of web sites. It attempts to be fast without sacrificing configurability.
    Downloads: 0 This Week
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  • 3
    Typed.js

    Typed.js

    A JavaScript typing animation library

    Typed.js is a library that types. Enter in any string, and watch it type at the speed you've set, backspace what it's typed, and begin a new sentence for however many strings you've set. Rather than using the strings array to insert strings, you can place an HTML div on the page and read from it. This allows bots and search engines, as well as users with JavaScript disabled, to see your text on the page. You can pause in the middle of a string for a given amount of time by including an escape character. CSS animations are built upon initialization in JavaScript. But, you can customize them at your will!
    Downloads: 0 This Week
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  • 4
    URI.js

    URI.js

    Javascript URL mutation library

    URI.js is a javascript library for working with URLs. It offers a "jQuery-style" API (Fluent Interface, Method Chaining) to read and write all regular components and a number of convenience methods like .directory() and .authority(). URI.js offers simple, yet powerful ways of working with query string, has a number of URI-normalization functions and converts relative/absolute paths. While URI.js provides a jQuery plugin. URI.js itself does not rely on jQuery. You don't need jQuery to use URI.js. URI.js (without plugins) has a gzipped weight of about 7KB, if you include all extensions you end up at about 13KB. So unless you need second level domain support and use URI templates, we suggest you don't include them in your build. Clone the URI.js repository or use a package manager to get URI.js into your project. See the build tool or use Google Closure Compiler.
    Downloads: 0 This Week
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  • 5
    UltraPlugin.js

    UltraPlugin.js

    A smart framework to developing sites and web applications

    [This project has been discontinued but you can use ALL versions created] UltraPlugin.js is the ultra smart powerful union of a data library containing a large proportion of functions that allows the user to develop web sites and applications in a pleasant and fast way with a framework that creates several possibilities by joining Html, Css and Visual Basic Script with the JS itself and allowing several new types of elements. This project is totally open-source and has a natural development so that users can adapt the work to their own way, besides being able to contribute with the author, warning bugs, faults or even possible improvements. Check the page constantly for updates or activate sourceforge's newsletter.
    Downloads: 0 This Week
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  • 6
    Projet réalisé dans le cadre de l'UV GL02 à l'Université de Technologie de Troyes. Ce projet est une librairie qui a été développée pour pouvoir permettre à la société ADOMY de mieux gérer ses plannings en détectant de potentiels conflits et en générant des rapports relatifs aux volumes horaires et aux nombres d'interventions se trouvant dans les plannings. Spécifications réalisés par l'équipe ZHIMAN Développement de la solution par l'équipe Ulysse Tests et maintenance par l'équipe ZHIMAN
    Downloads: 0 This Week
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  • 7
    Unus is a framework that gives developers a powerful, simple to use tool, with many advanced features that are seen in enterprise level applications.
    Downloads: 0 This Week
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  • 8
    Vanilla Web Projects

    Vanilla Web Projects

    Mini projects built with HTML5, CSS & JavaScript

    vanillawebprojects is a collection of small, hands-on web apps built with only HTML, CSS, and plain JavaScript to teach core front-end skills without frameworks. Each project targets a concrete concept—DOM manipulation, events, localStorage, fetch, form validation, audio/video APIs, and more—so learners see ideas applied in working code. The codebases are intentionally compact and readable, making them easy to clone, tweak, and extend. Projects progress from beginner-friendly to moderately advanced, offering a steady ramp of difficulty and variety. This repository is popular for daily practice, classroom demos, and portfolio starters because it emphasizes results you can see in the browser immediately. By avoiding heavy tooling, it keeps the focus on fundamentals that carry over to any library or framework later.
    Downloads: 0 This Week
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  • 9
    VenoBox

    VenoBox

    Responsive jQuery lightbox plugin

    Responsive modal window javaScript plugin, touch swipe gallery. Just another responsive lightbox plugin, suitable for images, inline content, iFrames, and videos. The big difference compared to many other plugins is that VenoBox calculates the max width of the image displayed and preserves its height if is taller than the window (so in small devices you can scroll down the content, avoiding vertical microscopic resized images).
    Downloads: 0 This Week
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  • 10
    Viewer

    Viewer

    A simple jQuery image viewing plugin. As of v1.0.0

    A simple jQuery image viewing plugin. As of v1.0.0, the core code of Viewer is replaced with Viewer.js.
    Downloads: 0 This Week
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  • 11
    VisualKeys is a visual approach to keyboard shortcuts. It's a jQuery plugin that give users an alternative way to control web applications without a mouse. No need to remember every key to every shortcut. On a simple keypress displays a menu.
    Downloads: 0 This Week
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  • 12
    VivaGraph

    VivaGraph

    Graph drawing library for JavaScript

    VivaGraphJS is a powerful, high-performance graph drawing library for JavaScript that enables developers to visualize complex networks directly in the browser or in Node.js environments. It is designed for speed and scalability, handling large graph datasets with smooth rendering and interactive capabilities such as dragging nodes and zooming. The library supports multiple rendering backends including SVG, WebGL, and Canvas, allowing developers to choose the best balance of performance and visual fidelity for their use case. Its layout algorithms help position nodes in aesthetically pleasing arrangements using force-directed simulations that adjust dynamically as the graph evolves. VivaGraphJS is modular, so you can extend or customize layouts, rendering, and interaction logic to fit specialized applications such as social network analysis, dependency mapping, or knowledge graphs.
    Downloads: 0 This Week
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  • 13
    Vivus.js

    Vivus.js

    JavaScript library to make drawing animation on SVG

    Vivus is a lightweight JavaScript class (with no dependencies) that allows you to animate SVGs, giving them the appearence of being drawn. There are a variety of different animations available, as well as the option to create a custom script to draw your SVG in whatever way you like. Every path element is drawn at the same time with a small delay at the start. This is currently the default animation. Each line is drawn synchronously. They all start and finish at the same time, hence the name `sync`. Each path element is drawn one after the other. This animation gives the best impression of live drawing. To give more freedom, it's possible to override the animation of each path and/or the entire SVG. It works a bit like the CSS animation timing function. But instead of using a cubic-bezier function, it use a simple JavaScript function. It must accept a number as parameter (between 0 to 1), then return a number (also between 0 and 1). It's a hook.
    Downloads: 0 This Week
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  • 14
    Vue.js modal

    Vue.js modal

    Easy to use, highly customizable Vue.js modal library

    Easy to use, highly customizable Vue.js modal library. This library is contributor-driven. It is not backed by any company, which means that all contributions are voluntary and done by the people who need them. If you need something improved, added, or fixed, please contribute it yourself. Please keep in mind that maintainers volunteer their free time to work on this project and have no obligation to reply on the issues, tailor library for specific use-cases or perform customer support. Dialog is a simplified version of the modal which has most parameters set by default and is useful for quick prototyping, alerts, etc. Dialog is merely an example of how easy it is to create modals that fit your project needs. Nevertheless, you can use it if you set dialog, true in plugin configuration. In order to instantiate modals at runtime (for lazy-loading or de-cluttering templates), it is possible to create modals dynamically.
    Downloads: 0 This Week
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  • 15
    VuePress

    VuePress

    Minimalistic Vue-powered static site generator

    Simplicity First. Minimal setup with markdown-centered project structure helps you focus on writing. Vue-Powered. Enjoy the dev experience of Vue + webpack, use Vue components in markdown, and develop custom themes with Vue. Performant. VuePress generates pre-rendered static HTML for each page, and runs as an SPA once a page is loaded. The fastest way to get your VuePress project setup is to use our create-vuepress-site generator which will help scaffold the basic VuePress site structure for you. You will then have the opportunity to configure your VuePress site’s metadata such as: project name, description, maintainer email, maintainer name, repository URL, etc.
    Downloads: 0 This Week
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  • 16
    Vuex

    Vuex

    Centralized State Management for Vue.js

    Vuex is a centralized state management pattern and library for Vue.js applications. It stores all the components in an application following rules that ensure the state is only mutated in a predictable manner. Unlike other management patterns, Vuex defines and separates the concepts involved in state management, and enforces rules that maintain independence between views and states. It is also a library implementation that's specifically tailored for Vue.js, so as to take advantage of its granular reactivity system for efficient updates. Vuex is ideal for building a medium-to-large-scale SPA, as it is better at handling state outside of Vue components.
    Downloads: 0 This Week
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  • 17
    WIComponents

    WIComponents

    UI components for apache wicket

    The „wicket components“ project is a component library for the apache wicket web-framework. Referring to classic component libraries for desktop applications ( like Microsoft Foundation Classes, QT Library or wxWindows) the wicket components provide graphical user interface components for wicket web-applications. Based upon this library it'll be easy to create complex user interfaces for data processing applications and it is a perfect start to migrate old desktop applications to modern web-applications. The project is getting bigger and bigger. Your help is greatly appreciated.
    Downloads: 0 This Week
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  • 18

    WSCreator

    Java library for automated Soap & Rest web Services Creation

    An awesome new way of adding SOAP and REST web services to any Spring IOC based Java project in minimum time. This library takes out all the pain part of implementing Soap & Rest Web Services specific code from developer's plate and does it in a very smart way. All you need to do is add dependency of this library to your project, add some annotations to your interfaces, add a servlet entry into your web.xml. & you are all set to go. Library uses Apache CXF to create SOAP based web services & for REST it uses Spring MVC. All the dynamic code is written at boot time. This library reduces precious development time & developers can actually focus on writing business code & other project specific stuff. See implementation details: http://sourceforge.net/projects/ws-creator/files/ Demo Application: http://sourceforge.net/p/wscreatordemo Central Repository link: http://search.maven.org/#search%7Cga%7C1%7Cwscreator
    Downloads: 0 This Week
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  • 19
    WTFJS

    WTFJS

    A list of funny and tricky JavaScript examples

    WTFJS is a curated collection of JavaScript “gotchas” and puzzling examples that reveal surprising corners of the language. Each entry presents a small snippet, explains why the behavior occurs, and ties it back to the specification or engine rules. The repository covers coercion quirks, edge-case comparisons, floating-point oddities, prototype traps, and scoping pitfalls, among others. It’s designed as both a fun read and a serious learning aid, helping developers build an intuition for how JavaScript evaluates expressions. By highlighting common misconceptions, it encourages safer coding patterns and more reliable mental models. Teachers, interviewers, and learners use it to spark discussion and deepen understanding of JavaScript’s semantics.
    Downloads: 0 This Week
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  • 20

    WebMod

    Web Module Audio Player

    This project has been moved to github: https://github.com/tenry92/webmod
    Downloads: 0 This Week
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  • 21
    Webiness

    Webiness

    Lightweight PHP framework

    Webiness is lightweight PHP framework based on MVC design pattern. It has a very straightforward installation process that requires only a minimal configuration, so it can save you a lot of hassle. Also, it canbe an ideal choice if you want to avoid PHP version conflict, as it works on all PHP versions from 5.3. Webiness extensively uses the lazy loading technique so, in most cases, it is faster then other frameworks. It can be used for rapid prototyping of web applications. Webiness is integrated with jQuery, and it comes with a set of AJAX-enabled features and his own light CSS framework for frontend development. Trying to be secure, it has integrated authetification and authorization module, RBAC user interface, sessions expire feature, input validation, CSRF protection, SQL injection prevention and other security features.
    Downloads: 0 This Week
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  • 22
    XDomain

    XDomain

    A pure JavaScript CORS alternative

    XDomain is a JavaScript library designed to enable cross-domain communication in web applications, addressing limitations imposed by the browser’s same-origin policy. It provides a simple API for making cross-origin requests, allowing developers to interact with external resources without requiring complex server-side configurations. The library works by creating a proxy mechanism that facilitates communication between different domains in a secure and controlled manner. It is particularly useful for legacy environments where modern solutions like CORS may not be fully supported or easily configurable. XDomain emphasizes compatibility and ease of integration, making it suitable for a wide range of web applications that need to communicate across domains. Its lightweight design ensures minimal impact on performance while still providing the necessary functionality for cross-domain requests.
    Downloads: 0 This Week
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  • 23
    Zebra_Accordion

    Zebra_Accordion

    A tiny accordion plugin for jQuery

    Zebra_Accordion is a tiny (2KB minified) accordion plugin for jQuery. It transforms a basic definition list, without requiring any other specific markup, into a small-footprint, easily configurable, fully customizable, cross-browser accordion widget, useful for better organizing larger groups of content.
    Downloads: 0 This Week
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  • 24
    Zebra_Cookie

    Zebra_Cookie

    An extremely small jQuery plugin for handling cookies

    Handling cookies can be a daunting task using plain JavaScript, and since jQuery doesn’t natively include functions for handling cookies, I've created Zebra_Cookie - an extremely small (~500 bytes minified) jQuery plugin for writing, reading and deleting cookies.
    Downloads: 0 This Week
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  • 25
    Zebra_Datepicker

    Zebra_Datepicker

    A lightweight date picker plugin for jQuery

    Zebra_Datepicker is a small, compact and highly configurable date picker plugin for jQuery, meant to enrich forms by adding a datepicker functionality. It works by automatically adding a calendar icon to the indicated input fields, which users can then click to open up an inline date picker. Users can easily jump between months and years due to the intuitive interface and finally, the selected date will be entered in the input field using a specified date format.
    Downloads: 0 This Week
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