Open Source JavaScript Libraries - Page 4
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JavaScript Libraries
View 77 business solutionsBrowse 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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AOS
Animate on scroll library
AOS is a lightweight JavaScript and CSS library for animating elements as users scroll through a webpage. It lets developers add animation behavior directly through HTML data attributes, making it easy to apply effects without writing custom JavaScript for every element. The library supports animations that trigger while scrolling down and can reset when scrolling back up. It includes options for duration, delay, easing, offsets, anchors, and once-only animation behavior. AOS is useful for landing pages, portfolios, marketing sites, and content-heavy pages that need subtle motion and visual rhythm. Its main value is providing scroll-based animation with a simple setup, flexible configuration, and broad front-end usability. -
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Apexcharts.js
Interactive JavaScript Charts built on SVG
A modern JavaScript charting library that allows you to build interactive data visualizations with simple API and 100+ ready-to-use samples. Packed with the features that you expect, ApexCharts includes over a dozen chart types that deliver beautiful, responsive visualizations in your apps and dashboards. ApexCharts is an MIT-licensed open-source project that can be used in commercial and non-commercial projects. You can create a combination of different charts, sync them and give your desired look with unlimited possibilities. Below is an example of synchronized charts with github style. Zoom, Pan, Scroll through data. Make selections and load other charts using those selections. An example showing some interactivity. Another approach to Drill down charts where one selection updates the data of other charts. Annotations allows you to write custom text on specific values or on axes values. Valuable to expand the visual appeal of your chart and make it more informative. -
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Buttons 2.0
A CSS button library built using Sass and Compass
Buttons is a highly customizable production ready mobile web and desktop css button library. Buttons is a free open source project created using Sass. View the showcase demo to see the buttons in action. The showcase provides a full list of examples along with code snippets to speed up development. If you're using Bower you can run bower install Buttons. Buttons styles are now independent (ex. button-flat, button-3d, etc.). You can apply these styles and they will automatically pick up the color attached to the button (ex. button-primary button-3d). Button colors are now completely independent (ex. button-primary). We no longer have classes like button-flat-primary, so to achieve this you now simply add button-flat button-primary. To edit Buttons simply change values within the _options.scss file. After you make your edits recompile your sass file and your changes will get processed. -
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CoreUI
Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript
CoreUI Admin Panel is not another blend of 3rd parties free components and libraries. It's the only Open Source Bootstrap Admin Dashboard Template built on the enterprise-grade hand-crafted UI Components Library created and backed by professionals. CoreUI and CoreUI PRO are delivered with fully-featured, and ready-to-use admin panel templates for your application. Save thousands of development hours by using ready-made, reusable, and commonly used widgets and UI components. Moreover, CoreUI Bootstrap Admin Template is delivered with a ready-to-use environment, so you don't have to waste time configuring the project. All build scripts and tools are ready to use out of the box. With CoreUI Template you can start a new project in a minute! -
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Earth Engine API
Python and JavaScript bindings for calling the Earth Engine API
The Earth Engine API provides Python and JavaScript client libraries for Google Earth Engine, a planetary-scale geospatial analysis platform. With it, users compose lazy, server-side computations over massive catalogs of satellite imagery and vector datasets without handling raw files locally. The API exposes functional operators for map algebra, reducers, joins, and machine learning that scale transparently on Earth Engine’s backend. Developers authenticate once, work interactively in notebooks or the Code Editor, and export results to Cloud Storage, Drive, or asset collections. Visualization helpers render tiled layers and charts so analysts can iterate quickly on workflows like land-cover mapping, change detection, or time-series analysis. By combining petabyte-scale data with concise functional transforms, the API turns complex remote-sensing pipelines into reproducible scripts that are easy to share. -
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HTML5 Website Templates
150+ HTML5 Website Templates
Website Templates is a large collection of more than 150 ready-made HTML5 website designs for beginners and professional developers. The repository includes responsive templates for businesses, portfolios, education, restaurants, fitness, real estate, medical services, hosting, photography, and many other use cases. Many designs are built with Bootstrap and combine HTML, CSS, JavaScript, images, and common front-end components. Coming-soon pages, admin dashboards, landing pages, resumes, corporate sites, and multipurpose layouts are included alongside full website designs. A central index links each template to a live example so users can preview designs before selecting one. Individual template folders contain the assets needed to study, modify, or deploy the design. The collection is intended as both a rapid starting point for websites and a source of practical front-end examples. -
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JavaScript Basics
Educational repository for learning JavaScript
JavaScript Basics is an extensive educational repository for learning JavaScript from foundational syntax through practical coding and interview preparation. It includes a very large long-form reference alongside dedicated folders for coding exercises and supporting scripts. The material is aimed at beginners as well as developers reviewing JavaScript for technical interviews. Repository topics emphasize core JavaScript, ES6 concepts, tutorials, common interview questions, and hands-on programming practice. Separate files provide multiple-choice questions and additional coding-oriented study material. The collection is designed for self-paced learning rather than as a reusable software package. Its size and topic breadth make it suitable as a searchable reference for day-to-day JavaScript study. -
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Rollup
A module bundler for JavaScript
Rollup is a module bundler for JavaScript which compiles small pieces of code into something larger and more complex, such as a library or application. It uses the new standardized format for code modules included in the ES6 revision of JavaScript, instead of previous idiosyncratic solutions such as CommonJS and AMD. ES modules let you freely and seamlessly combine the most useful individual functions from your favorite libraries. This will eventually be possible natively everywhere, but Rollup lets you do it today. Rollup can be used either through a command line interface with an optional configuration file, or else through its JavaScript API. Rollup allows you to write your code using the new module system, and will then compile it back down to existing supported formats such as CommonJS modules, AMD modules, and IIFE-style scripts. This means that you get to write future-proof code. -
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SurveyJS
JavaScript Survey and Form Library
SurveyJS Form Library is distributed as npm packages and as scripts and style sheets that you can reference on your page. You can use it in any React, Angular, Vue, Knockout, or jQuery application. React, Angular, Knockout, and Vue3 are supported natively. To communicate with the server, the libraries use JSON objects that represent form schemas (content and layout of a form) and form results (answers). You have the option to build dynamic JSON-driven forms using our free full-featured form builder demo available on the website. Alternatively, you can integrate the form builder library and create forms using a drag-and-drop UI directly within your own application. With years of development and support behind us, we've assisted hundreds of companies across various industries. With Survey, you can create nearly anything that popular cloud services offer. Furthermore, our library is fully extensible, allowing you to modify its behavior to suit your specific needs. -
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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! -
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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. -
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bignumber.js
A JavaScript library for arbitrary-precision decimal arithmetic
bignumber.js is a JavaScript library for arbitrary-precision decimal and non-decimal arithmetic. Faster, smaller, and perhaps easier to use than JavaScript versions of Java's BigDecimal. Replicates the toExponential, toFixed, toPrecision and toString methods of JavaScript's Number type. Includes a toFraction and a correctly-rounded squareRoot method. Supports cryptographically secure pseudo-random number generation. Wide platform compatibility, uses JavaScript 1.5 (ECMAScript 3) features only. If a smaller and simpler library is required see big.js. It's less than half the size but only works with decimal numbers and only has half the methods. It also has fewer configuration options than this library, and does not allow NaN or Infinity. See also decimal.js, which among other things adds support for non-integer powers, and performs all operations to a specified number of significant digits. -
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carbone
Fast and simple report generator, from JSON to pdf, xslx, docx, odt
Turn your JSON into PDF, DOCX, XLSX, PPTX, ODS and many more. Fast, Simple and Powerful report generator in any format PDF, DOCX, XLSX, ODT, PPTX, ODS, XML, CSV using templates and your JSON data as input. -
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discord.io
A small, single-file library for creating DiscordApp clients
A small, single-file, fully featured Discordapp library for Node.js and browsers. -
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jQuery UI
The jQuery user interface library
jQuery UI is a curated set of user interface interactions, effects, widgets, and themes built on top of the jQuery JavaScript Library. Whether you're building highly interactive web applications or you just need to add a date picker to a form control, jQuery UI is the perfect choice. -
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linkedom
A triple-linked lists based DOM implementation
linkedom is a lightweight DOM implementation designed for server-side rendering and other environments without a browser DOM. Its triple-linked-list structure aims to keep operations linear and avoid recursion, excessive memory use, and call stack failures on very large documents. It provides DOMParser and parseHTML APIs that return documents, window-like objects, events, elements, and custom element support without polluting global scope. Developers can query content with CSS selectors, create and move nodes, serialize documents, and restore nodes through its JSON format. A worker-focused export supports Deno, Web Workers, and Service Workers without depending strictly on Node.js. LinkeDOM favors speed and minimalism over complete browser emulation, so it is not intended as a fully standards-compliant replacement for JSDOM. -
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-prefix-free
Break free from CSS prefix hell
-prefix-free is a client-side JavaScript utility that lets authors write unprefixed CSS while supporting browsers that historically required vendor prefixes. After inclusion, it examines linked stylesheets, style blocks, inline declarations, and dynamically added CSS. It detects the current browser’s prefix and modifies only properties, values, selectors, functions, keywords, and at-rules that need it. The bundled StyleFix framework also lets plugin authors register additional CSS transformation callbacks. Public APIs can process complete CSS strings or prefix individual selectors and properties. Because the conversion happens in the browser, the original styles remain clean and easier to maintain. The repository was archived in 2024 and is now mainly useful for legacy projects and browser-compatibility study. -
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Airbnb JavaScript Style Guide
JavaScript Style Guide
The Airbnb JavaScript Style Guide is a widely adopted, opinionated, open-source set of coding conventions and best practices for writing readable, maintainable JavaScript (and React/JSX) code, published under the MIT license and assuming usage of modern tooling such as Babel and ESLint. Whichever testing framework you use, you should be writing tests. Strive to write many small pure functions, and minimize where mutations occur. Be cautious about stubs and mocks - they can make your tests more brittle. -
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AmplitudeJS
Open Source HTML5 Web Audio Library
Open Source HTML5 Web Audio Library. Design your web audio player, the way you want. No dependencies are required. AmplitudeJS is a lightweight JavaScript library that allows you to control the design of your media controls in your webpage, not the browser. No dependencies (jQuery not required). AmplitudeJS is available under the MIT License. Open-source software is not sustainable without proper financial support. Maintaining an open-source project takes a lot of effort and resources. If you are very thankful for what you can do with AmplitudeJS or if you are using AmplitudeJS to make any sort of revenue, we kindly ask that you contribute any resources available to keep the community growing. Autogenerate waveforms and visualizations using the Web Audio API. Public functions for unlimited control! All of our example players have the code available on our "AmplitudeJS Example Players" repository. -
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ArgoSBX
Xiaobai built his own agent artifact
ArgoSBX is an advanced automation script that combines multiple networking cores, including sing-box, Xray, and Cloudflare Argo, into a unified deployment framework. It is designed to provide a highly flexible and powerful proxy solution capable of operating across various environments such as VPS, Docker, and containerized systems. The tool supports a wide range of protocols and configurations, including TLS-based and Reality-based connections, enabling users to tailor their setup to different network conditions. One of its defining features is the ability to integrate CDN-based routing and WARP combinations, offering numerous configuration permutations to optimize performance and bypass restrictions. The script is built for minimal interaction, allowing users to deploy complex setups with a single command while still retaining deep customization options. -
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Baileys
Socket-based TS/JavaScript API for WhatsApp Web
Baileys is a TypeScript and JavaScript library for interacting directly with the WhatsApp Web protocol over WebSockets. It does not require Selenium, Chromium, or another browser process to maintain a WhatsApp session. Accounts can be linked through WhatsApp’s multi-device system using QR codes or pairing codes. The library exposes events and socket APIs for messages, chats, contacts, groups, presence, media, and other WhatsApp Web behaviors. Its architecture is widely used as a foundation for bots, integrations, and custom messaging clients. Baileys is community-maintained and has introduced major API changes across recent releases, so applications should follow its current migration guidance. The maintainers explicitly discourage spam, stalkerware, and abusive automated messaging. -
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BypassAntiVirus
The remote control no-kill series of articles and supporting tools
BypassAntiVirus is a security-research archive focused on studying how antivirus products detect remote-access payloads and related executable techniques. It contains a long series of articles documenting historical evasion approaches, tool comparisons, implementation experiments, and detection-rate testing. The material examines how changes in packaging, compilation, trusted system components, and execution techniques can affect antivirus visibility. Numerous security tools and research examples are collected alongside the written material. Results were historically compared against multiple antivirus engines to illustrate differences in detection behavior. Because the repository concerns defensive bypass techniques that can be misused, it is most appropriate for authorized red-team research, malware analysis, and defensive detection engineering. -
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Complete JavaScript Course
Starter files, final projects, and FAQ for Complete JavaScript course
Complete JavaScript Course is the official code repository for Jonas Schmedtmann’s Complete JavaScript Course. It contains starter files, final project files, and frequently asked questions that support the video-based Udemy course. The material is organized by course sections, covering fundamentals, developer skills, DOM projects, JavaScript internals, data structures, functions, arrays, OOP, asynchronous JavaScript, modules, tooling, and larger final applications. Learners can start with the starter code and compare their work with the final versions when debugging. The repository also links to deployed examples of major projects such as Pig Game, Bankist, Mapty, and forkify. It is primarily an educational companion resource rather than a standalone software product. -
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DataTables
Tables plug-in for jQuery
DataTables is a jQuery plugin that enhances HTML tables with powerful dynamic features such as searching, sorting, and pagination. It transforms plain static tables into interactive data explorers with minimal code changes. Developers can customize its behavior through an extensive API, adding export buttons, column visibility toggles, custom filters, and integration with remote data sources via Ajax. The plugin is modular, with a core that provides essentials and a wide range of extensions that cover advanced functionality like fixed headers, responsive layouts, and inline editing. Styling can be adapted to frameworks like Bootstrap or Foundation, making it blend seamlessly into modern UIs. Because it handles large datasets efficiently, DataTables has become a go-to component for dashboards, reporting tools, and admin interfaces. -
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FastClick
Easy-to-use library to remove click delays on browsers with touch UIs
FastClick is a simple, easy-to-use library for eliminating the 300ms delay between a physical tap and the firing of a click event on mobile browsers. The aim is to make your application feel less laggy and more responsive while avoiding any interference with your current logic. FastClick is developed by FT Labs, part of the Financial Times. Note: As of late 2015 most mobile browsers - notably Chrome and Safari - no longer have a 300ms touch delay, so fastclick offers no benefit on newer browsers, and risks introducing bugs into your application. Consider carefully whether you really need to use it. The library has been deployed as part of the FT Web App. FastClick doesn't attach any listeners on desktop browsers.
