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.

  • Secure File Transfer for Windows with Cerberus by Redwood Icon
    Secure File Transfer for Windows with Cerberus by Redwood

    Protect and share files over FTP/S, SFTP, HTTPS and SCP with the #1 rated Windows file transfer server.

    Cerberus supports unlimited users and connections on a single IP, with built-in encryption, 2FA, and a browser-based web client — all deployable in under 15 minutes with a 25-day free trial.
    Try for Free
  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • 1
    redux-rx

    redux-rx

    RxJS utilities for Redux

    The redux-rx project is a utility library that integrates RxJS observables into Redux workflows, enabling reactive programming patterns for state management. It allows developers to represent streams of actions, state changes, and side effects as observable sequences, providing a powerful alternative to traditional middleware approaches. The library includes tools for creating smart components that derive their behavior from observable data streams instead of imperative state updates. It also introduces an observable-based middleware that complies with Flux Standard Actions, ensuring compatibility with Redux conventions. By leveraging RxJS, developers can compose complex asynchronous logic in a declarative and composable way. The project is particularly useful for applications that require real-time data handling, event streams, or complex side-effect management.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 2
    rot.js

    rot.js

    ROguelike Toolkit in JavaScript

    ROguelike Toolkit in JavaScript. Cool dungeon-related stuff, interactive manual, documentation, tests.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    rowGrid.js

    rowGrid.js

    A small, lightweight JavaScript plugin for placing items

    rowGrid.js is a small, lightweight (~1000 bytes gzipped) jQuery plugin for placing images (or other items) in straight rows. The grid is similar to grids on Google Image Search, Flickr, Shutterstock and Google+ images. All items must have the same height but the width can be variable. RowGrid.js justifies the items in straight rows so that the width of the rows equals the width of the container/parent element. At first, rowGrid.js adjusts the margin between the items. If this is not enough rowGrid.js scales down the items.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 4
    seamless-immutable

    seamless-immutable

    Immutable data structures for JavaScript

    Immutable JS data structures which are backwards-compatible with normal Arrays and Objects. Use them in for loops, pass them to functions expecting vanilla JavaScript data structures, etc. Whenever you deeply clone large nested objects, it should typically go much faster with Immutable data structures. This is because the library reuses the existing nested objects rather than instantiating new ones. In the development build, objects are frozen. The development build also overrides unsupported methods (methods that ordinarily mutate the underlying data structure) to throw helpful exceptions. We generally recommend to use the "development" build that enforces immutability (and this is the default in Node.js). Only switch to the production build when you encounter performance problems. By popular demand, functions, errors, dates, and React components are treated as immutable even though technically they can be mutated.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build, govern, and optimize agents and models with Gemini Enterprise Agent Platform.
    Start Free
  • 5
    sensitive-fields

    sensitive-fields

    List of sensitive fields that should be purged for security purposes

    List of sensitive fields that should be masked, obfuscated, or purged for security purposes.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    the simpleHtmlDatagrid can be help ajax programmer to build datagrid in web browser more easily.it can not only fill datagrid with array or json array but also add only a row once a time.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    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: 0 This Week
    Last Update:
    See Project
  • 8
    simplelightbox

    simplelightbox

    Touch-friendly image lightbox for mobile and desktop

    Touch-friendly image lightbox for mobile and desktop. You can customize Simplelightbox by changing the style in simplelightbox.css. You can have multiple lightboxes on one page if you give them different selectors. Only some CSS is included. You can change the style if you want. Lots of options. Preloading next and previous images. Android, iOs, and Windows phone support.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    sjcl

    sjcl

    Stanford Javascript Crypto Library

    The Stanford Javascript Crypto Library is a project by the Stanford Computer Security Lab to build a secure, powerful, fast, small, easy-to-use, cross-browser library for cryptography in Javascript. SJCL is small but powerful. The minified version of the library is under 6.4KB compressed, and yet it posts impressive speed results. SJCL is secure. It uses the industry-standard AES algorithm at 128, 192 or 256 bits; the SHA256 hash function; the HMAC authentication code; the PBKDF2 password strengthener; and the CCM and OCB authenticated-encryption modes. Just as importantly, the default parameters are sensible: SJCL strengthens your passwords by a factor of 1000 and salts them to protect against rainbow tables, and it authenticates every message it sends to prevent it from being modified. We believe that SJCL provides the best security which is practically available in Javascript.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

    General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

    Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
    Try Free
  • 10
    stroll.js

    stroll.js

    CSS3 scroll effects list

    stroll.js is a micro-library for creating subtle, scroll-based list and grid animations in modern browsers. It listens to scroll events and applies CSS transitions to elements as they come into or out of view, producing a lively, tactile feel for long lists. The idea is to make scroll-heavy UIs (like feeds, galleries, or item pickers) feel less flat without having to code complex intersection logic. Because it leans on CSS and simple JavaScript hooks, it stays small and easy to integrate into existing markup. It is well suited for landing pages or portfolio sites where you want a touch of motion without importing a full animation framework. The library’s approach is declarative: you style your list, add stroll, and it handles the in-view choreography.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    sxPHP - Smart extended PHP is a (RAF) Rapid Development Framework for >= PHP 5.2.2.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    t.js

    t.js

    Lightweight $.Hypertext.Typewriter

    Lightweight $.Hypertext.Typewriter.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    tableExport.jquery.plugin

    tableExport.jquery.plugin

    jQuery plugin to export a html table to JSON, XML, CSV, TSV, TXT, SQL

    jQuery plugin to export an html table to JSON, XML, CSV, TSV, TXT, SQL, Word, Excel, PNG, and PDF.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14

    tarte

    Tarte project provides common API libraries among multi-languages.

    Tarte is a project which provides common API libraries among multiple programming languages.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15

    tedo

    dom oriented javascript template for dynamic pages

    Tedo is a template engine in javascript for pages with a lot of dynamically updated content. It works in the DOM-tree to make a clean distinktion between layout and script. WIth tedo it is easy to update layout or dynamic behaviour without breakage. Templates are created in the normal html-file. To special elements the class tedo is added and data-tedo-tags describing the type of template. To modify elements through templates the tedo object is used. Example of usage is tedo.my_list.addLast() The goal is that it should be compatible with the newer versions of all big browsers both mobile and stationary, but it requires some newer features like classlist, dataset and elementNode references.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    textures.js

    textures.js

    SVG patterns for data visualization

    Textures.js is a JavaScript library for creating SVG patterns. Made on top of d3.js, it is designed for data visualization. Import textures.js from NPM. You can also use textures.js in your HTML page with a <script> tag by downloading textures.js to a local folder or by using the Unpkg CDN network. Textures.js can be used alongside d3.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    timeago

    timeago

    The original jQuery plugin that makes it easy to support automatically

    Timeago is a jQuery plugin that makes it easy to support automatically updating fuzzy timestamps (e.g. "4 minutes ago" or "about 1 day ago") from ISO 8601 formatted dates and times embedded in your HTML (à la microformats).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    tinyJS
    JS-Toolkit: Selectors with Methods, Events, Networking and Helpers in less than 5kb
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    toKernel
    Universal PHP Framework. toKernel is a fully Object-Oriented extensible framework. By design, the framework's kernel is monolithic which brings a lot of advantages. It is NOT a loader for a mere collection of classes.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    tracking.js

    tracking.js

    A modern approach for Computer Vision on the web

    The tracking.js library brings different computer vision algorithms and techniques into the browser environment. By using modern HTML5 specifications, we enable you to do real-time color tracking, face detection and much more, all that with a lightweight core (~7 KB) and intuitive interface. To get started, download the project. This project includes all of the tracking.js examples, source code dependencies you'll need to get started. Unzip the project somewhere on your local drive. The package includes an initial version of the project you'll be working with. While you're working, you'll need a basic HTTP server to serve your pages. Test out the web server by loading the finished version of the project. The main goal of tracking.js is to provide those complex techniques in a simple and intuitive way on the web. We believe computer vision is important to improve people's life, bringing it to the web will make this future a reality a lot faster.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    twitter-text

    twitter-text

    This code is used at Twitter to tokenize and parse text

    Twitter Text Libraries. This code is used at Twitter to tokenize and parse text to meet the expectations for what can be used on the platform. This repository is a collection of libraries and conformance tests to standardize parsing of Tweet text. It synchronizes development, testing, creating issues, and pull requests for twitter-text's implementations and specification. These libraries are responsible for determining the quantity of characters in a Tweet and identifying and linking any URL, @username, #hashtag, or $cashtag. Emoji supported by twemoji always count as two characters, regardless of combining modifiers. This includes emoji which have been modified by Fitzpatrick skin tone or gender modifiers, even if they are composed of significantly more Unicode code points. Emoji weight is defined by a regular expression in twitter-text that looks for sequences of standard emoji combined with one or more Unicode Zero Width Joiners (U+200D).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    ui-neumorphism

    ui-neumorphism

    React component library designed on the "new skeuomorphism"

    UI-metamorphism is a react component library designed on the "new skeuomorphism" UI/UX trend.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    uiw icons

    uiw icons

    The premium icon font for @uiwjs Component Library

    The premium icon font for uiwjs Component Library. Check out the search feature, which has keywords identifying common icon names and styles. For example, if you search for "arrow" we call up every icon that could possibly be used as an arrow. We've also included each icon's class name for easy copy/pasting when you're developing! They are free to use and licensed under MIT. We intend for this icon pack to be used with uiw, but it’s by no means limited to it. Use them wherever you see fit, personal or commercial.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    universal-tilt.js

    universal-tilt.js

    Parallax tilt effect library

    JavaScript & jQuery elements movement library based on Tilt.js by Gijs Rogé and vanilla-tilt.js by Șandor Sergiu. universal-tilt.js contains additional functions for mobile devices with a gyroscope, new Position Base option and more.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    v8n

    v8n

    JavaScript fluent validation library

    v8n aims to be the most fluent and simple validation library for use in any context. The API is beautifully readable and allows for easy creation of complex validations in any part of your app. Even though there are many useful default validation methods, it's a breeze to add your own fluent rules to v8n and use them anywhere in your app. The name v8n is actually derived from the structure of the word "validation". If you look closely you will find that between the v and the n, there are precisely 8 letters (a l i d a t i o). So we get from the sort of boring word validation to the very nice-looking acronym v8n.
    Downloads: 0 This Week
    Last Update:
    See Project
MongoDB Logo MongoDB