Browse free open source JavaScript Frameworks and projects below. Use the toggles on the left to filter open source JavaScript Frameworks by OS, license, language, programming language, and project status.

  • Go from Code to Production URL in Seconds Icon
    Go from Code to Production URL in Seconds

    Cloud Run deploys apps in any language instantly. Scales to zero. Pay only when code runs.

    Skip the Kubernetes configs. Cloud Run handles HTTPS, scaling, and infrastructure automatically. Two million requests free per month.
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  • Build Securely on Azure with Proven Frameworks Icon
    Build Securely on Azure with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
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  • 1
    VvvebJs

    VvvebJs

    Drag and drop website builder javascript library

    Drag and drop website builder javascript library. Components and blocks/snippets drag and drop. Undo/Redo operations. One or two panels interface. File manager and component hierarchy navigation. Add a new page. Live code editor. Image upload with example PHP script included. Page download or export HTML or save the page on the server with example PHP script included. Components/Blocks list search. Bootstrap 4 components. Youtube, Google maps, Charts.js, etc widgets. By default, the editor comes with Bootstrap 4 and Widgets components and can be extended with any kind of components and inputs.
    Downloads: 2 This Week
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  • 2
    Web Experience Toolkit

    Web Experience Toolkit

    Open source code library for building innovative websites

    Web Experience Toolkit (WET): Open source code library for building innovative websites that are accessible, usable, interoperable, mobile-friendly and multilingual. This collaborative open source project is led by the Government of Canada. A collection of flexible and themeable templates and reusable components. A collaborative open source project led by the Government of Canada. HTML5-first approach (leveraging native HTML5 support and filling support gaps with “polyfills”) Supporting a wide variety of browsers (IE, Firefox, Chrome, Safari, Opera) Building support for HTML data (RDFa 1.1 Lite, Schema.org) Adapts to different screen sizes and device capabilities. Touchscreen support. Optimized for performance. Building support for device-based mobile applications.
    Downloads: 2 This Week
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  • 3
    ImpressCMS

    ImpressCMS

    Make a lasting impression!

    Community websites can be difficult to maintain and a target for hackers. But, not with ImpressCMS behind it. Started in 2007 by a talented and committed group of developers and designers unhappy with the progress of the projects they were working on, ImpressCMS continues to lead in providing secure, easy to build and maintain community websites. ImpressCMS is built using PHP and MySQL, and employs JavaScript and Smarty and is optimized for performance - on even shared hosts. Secure. Easy. Open. Friendly.
    Downloads: 9 This Week
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  • 4
    ZK - Simply Ajax and Mobile
    ZK is an open-source Java framework for building modern web and mobile applications. It enables developers to create rich, interactive UIs using only Java — no JavaScript required. With 200+ Ajax-powered components, event-driven architecture, and support for popular technologies like Spring, Java EE, and JSP/JSF, ZK makes it simple to deliver powerful and user-friendly web applications.
    Downloads: 6 This Week
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  • Auth0 B2B Essentials: SSO, MFA, and RBAC Built In Icon
    Auth0 B2B Essentials: SSO, MFA, and RBAC Built In

    Unlimited organizations, 3 enterprise SSO connections, role-based access control, and pro MFA included. Dev and prod tenants out of the box.

    Auth0's B2B Essentials plan gives you everything you need to ship secure multi-tenant apps. Unlimited orgs, enterprise SSO, RBAC, audit log streaming, and higher auth and API limits included. Add on M2M tokens, enterprise MFA, or additional SSO connections as you scale.
    Sign Up Free
  • 5
    Advanced REST Client application

    Advanced REST Client application

    Advanced REST Client - Desktop application

    This is the main repository for the ARC Electron application. If you are still using Chrome plug-in then proceed to move From Chrome To the Desktop Client section. The original Chrome application is discontinued as Chrome stopped supporting browser-based applications. ARC was built as an open-source and free for everyone API tool out of a passion for giving the developer community tools they need. The application and related projects (like API Console) are created and distributed to our users for free. Our vision is that API tools are available for every developer and organization, regardless of their size, for free and without forced relationship. API tools are using open standards to communicate with other applications so developers can build integrations. Originally the application was created by the author for own convenience while developing APIs. It quickly turned out to be a common problem among developers to consume APIs during the development process.
    Downloads: 1 This Week
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  • 6
    Artillery

    Artillery

    Cloud-scale load testing. Fully serverless, test any stack

    Artillery is cloud-native, open source, and integrates with your favorite monitoring and CI/CD stack. Load test anything, at any scale. The most advanced load-testing platform in the world. Get started and run a test in minutes from your local machine. Then scale it out effortlessly. Free & open-source. Artillery scales like no other. Run your tests from your own AWS account with no infra to set up or manage. Use Playwright to load test with real browsers. Test HTTP, WebSocket, Socket.io, gRPC, Kafka, HLS, and more. Write scenarios with multi-step interactions. Designed for testing transactional APIs and web apps. Use ready-made integrations or write custom logic in Node.js, using any of the thousands of useful npm modules. Artillery integrates with the software you know, love and rely on.
    Downloads: 1 This Week
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  • 7
    Atri Framework

    Atri Framework

    Open-source full-stack web development framework built on top of React

    The web framework to build stunning web apps. Build frontend easily using Atri visual builder or React code. Build backend using FastAPI. Atri framework is not just limited to the JavaScript world. You can use this framework with many languages such as Python, NodeJS (upcoming), etc. Atri framework comes with a suite of productivity tools such as visual editor, asset management tools, etc. that significantly reduce development time from months to hours. Using Atri framework, developers do not need to write and document REST APIs. Instead, they rely upon the object model which acts as a single source of truth. This also has other benefits as well such as reducing compliance breaches. Use our powerful visual builder to create frontend or write React code. Write backend using our Python API that is inspired from Unity's game engine. Use our CLI to deploy at your platform of choice such as AWS, GitHub Pages, etc. or Atri cloud.
    Downloads: 1 This Week
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  • 8
    Claudia Bot Builder

    Claudia Bot Builder

    Create chat bots for Facebook Messenger, Slack, Amazon Alexa, etc.

    Claudia Bot Builder helps developers create and deploy chat-bots for various platforms in minutes to AWS Lambda. It simplifies the messaging workflows, automatically sets up the correct web hooks, and guides you through configuration steps, so that you can focus on important business problems and not have to worry about infrastructure code. This code is enough to operate bots for all supported platforms. Claudia Bot Builder automatically parses the incoming messages into a common format, so you can handle it easily. It also automatically packages the response into the correct message template for the requesting bot, so you do not have to worry about individual bot protocols. Claudia Bot Builder doesn't have a stand-alone http server in the background (such as Express, Hapi, etc.), instead it uses API Gateway and it's not trivial to simulate similar environment locally. Deploy it with --version test to create a separate test environment directly in AWS Lambda.
    Downloads: 1 This Week
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  • 9
    Cloud Commander

    Cloud Commander

    Cloud Commander file manager for the web with console and editor

    Cloud Commander is a file manager for the web. It includes a command-line console and a text editor. Cloud Commander helps you manage your server and work with files, directories and programs in a web browser from any computer, mobile or tablet. Can be used local or remotely. Adapts to screen size. 3 built-in editors with support of syntax highlighting: Dword, Edward and Deepword. Console with support of the default OS command line. Written in JavaScript/Node.js. Built-in archives pack: zip and tar.gz. Built-in archives extract: zip, tar, gz, bz2, .tar.gz and .tar.bz2 (with help of inly). Cloud Commander could be used as middleware for node.js applications based on socket.io and express. The docker images are provided for multiple architectures and types. Config would be read from home directory, hosts root file system would be mount to /mnt/fs, 8000 port would be exposed to hosts port.
    Downloads: 1 This Week
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  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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  • 10
    Detox

    Detox

    Gray box end-to-end testing and automation framework for mobile apps

    High velocity native mobile development requires us to adopt continuous integration workflows, which means our reliance on manual QA has to drop significantly. Detox tests your mobile app while it's running in a real device/simulator, interacting with it just like a real user. The most difficult part of automated testing on mobile is the tip of the testing pyramid - E2E. The core problem with E2E tests is flakiness, tests are usually not deterministic. We believe the only way to tackle flakiness head on is by moving from black box testing to gray box testing. That's where Detox comes into play. Detox is built from the ground up to support React Native projects as well as pure native ones. Read the Getting Started Guide to get Detox running on your app in less than 10 minutes. We believe that the only way to address the core difficulties with mobile end-to-end testing is by rethinking some of the principles of the entire approach.
    Downloads: 1 This Week
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  • 11
    Discord.js

    Discord.js

    A powerful JavaScript library for interacting with the Discord API

    discord.js is a powerful Node.js module that allows you to interact with the Discord API very easily. It takes a much more object-oriented approach than most other JS Discord libraries, making your bot's code significantly tidier and easier to comprehend. Usability, consistency, and performance are key focuses of discord.js, and it also has nearly 100% coverage of the Discord API. It receives new Discord features shortly after they arrive in the API.
    Downloads: 1 This Week
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  • 12
    Electron Egg

    Electron Egg

    Cross platform, enterprise desktop software development frameworks

    A framework for building modern Electron applications using Egg.js, enabling structured and scalable backend logic in desktop apps.
    Downloads: 1 This Week
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  • 13
    Flight

    Flight

    A component-based, event-driven JavaScript framework from Twitter

    Flight is a lightweight, component-based JavaScript framework that maps behavior to DOM nodes. Twitter uses it for their web applications. By way of example, we've included a simple email client demo (browse the source) built over the Flight framework. There's also a flight implementation over on the todoMVC site. Flight uses jQuery and requires a module loader with support for AMD, like WebPack or Require.js. Please read the Flight documentation for installation instructions. Flight is distinct from existing frameworks in that it doesn't prescribe or provide any particular approach to rendering or providing data to a web application. It's agnostic to how requests are routed, which templating language you use or even if you render your HTML on the client or the server. While some web frameworks encourage developers to arrange their code around a prescribed model layer, Flight is organized around the existing DOM model with functionality mapped directly to DOM nodes.
    Downloads: 1 This Week
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  • 14
    Framevuerk

    Framevuerk

    Fast, Responsive, Multi Language, Both Direction Support

    Framevuerk is an archived Vue.js-based UI framework created for building fast, responsive, configurable web interfaces. It was designed without external dependencies beyond Vue and focuses on practical component-based application layouts. The framework supports both left-to-right and right-to-left interface directions, making it useful for multilingual products and internationalized user experiences. It also includes customization options for language, direction, colors, spacing, transitions, shadows, and other visual settings through a builder configuration. Developers can install it through npm and integrate it into a Vue app with its script and stylesheet. Although the repository is now read-only, it remains a useful reference for older Vue UI framework design and configurable front-end theming.
    Downloads: 1 This Week
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  • 15
    Framework7

    Framework7

    Full featured HTML framework for building iOS & Android apps

    Framework7 - is a free and open source framework to develop mobile, desktop or web apps with a native look and feel. It is also an indispensable prototyping tool to show working app prototypes as soon as possible in case you need to. With such a stunning set of UI components that Framework7 provides right from the box, it allows to create of web apps, progressive web apps (PWA) and iOS and Android apps with a native look and feel. You can use any tools you love when working with Framework7. It doesn’t force you to use anything except plain HTML, CSS and JavaScript. Creating apps with Framework7 is easy as creating a website. Framework7 paired with extra tools like Electron and NW.js allows building native desktop apps. And in addition to vanilla JavaScript library, Framework7 comes with Vue.js, React and Svelte components to bring components-syntax, structured data and data bindings with power and simplicity of Vue.js, React or Svelte.
    Downloads: 1 This Week
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  • 16
    G6

    G6

    A Graph Visualization Framework in JavaScript

    G6 is graph visualization engine with simplicity and convenience. Based on the ability to customize, it provides a set of elegant graph visualization solutions and helps developers to build up applications for graph visualization, graph analysis, and graph editor. G6 is a complete graph visualization engine, which focuses on relational data. According to practical business scenarios, we found the top solutions. Well-designed simple, flexible, and extendable interfaces will satisfy your infinite originality. A social network is an important scenario in graph visualization. The relationships become complicated with the development of social networks. Graph visualization and analysis do well in these complex cases.
    Downloads: 1 This Week
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  • 17
    JeeSite

    JeeSite

    A basic enterprise information development platform

    JeeSite is a high-efficiency, high-performance, and strong security open source Java EE rapid development platform based on a number of excellent open source projects, highly integrated and packaged. JeeSite is the best basic platform solution for you to quickly complete your project. JeeSite is the best study case for you to learn the Java platform. JeeSite is also the best assistant for private work. JeeSite is a Java-based development platform built on the Spring Framework, with Spring MVC as the model view controller, MyBatis as the data access layer, Apache Shiro as the authority authorization layer, Ehcahe for caching common data, and Activit as the workflow engine. It is the best integration in the JavaEE world. JeeSite is mainly positioned in the field of enterprise informatization. It has built-in basic functions of enterprise informatization system and efficient code generation tools.
    Downloads: 1 This Week
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  • 18
    Koa

    Koa

    Expressive middleware for node.js using ES2017 async functions

    Koa is a minimal, expressive web framework for Node.js created by the team behind Express, built around modern JavaScript features. Its middleware system uses async functions and an “onion” execution model, producing clean, sequential control flow for request/response handling. Koa keeps the core small and unopinionated—there’s no built-in router or templating—so developers compose only the pieces they need. The framework exposes a refined Context object to standardize request and response utilities without obscuring Node’s primitives. This design encourages readable middleware, robust error handling, and straightforward composition for tasks like authentication, logging, and body parsing. In production, Koa’s simplicity and async-first approach translate to predictable performance and maintainable server code.
    Downloads: 1 This Week
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  • 19
    Material Kit 2

    Material Kit 2

    Free and Open Source UI Kit for Bootstrap 4, React, Vue.js,etc.

    Material Kit is a Free Bootstrap 5 UI Kit with a fresh, new design inspired by Google's material design. You asked for it, so we built it. It's a great pleasure to introduce to you the material concepts in an easy-to-use and beautiful set of components. Along with the restyling of the Bootstrap elements, you will find three fully-coded example pages, to help you design your next project. Material Kit makes use of light, surface, and movement. It uses a deliberate color choice, edge-to-edge imagery, and large-scale typography. The general layout resembles sheets of paper following multiple different layers so that the depth and order are obvious. The navigation stays mainly on the left and the actions on the right. This new design has elements that have been the result of research regarding ink and paper and the way objects and materials interact in real life. The result is a beautiful and consistent set of elements that can get you started with your next project.
    Downloads: 1 This Week
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  • 20
    MediaElement.js

    MediaElement.js

    A dependable HTML media framework

    Boost your player with Chromecast, Google Analytics and more. MediaElement.js is a blazingly fast and amazingly powerful HTML5 audio and video library that creates a unified feel for media files (MP4, MP3, FLV), streaming content (HLS, M(PEG)-DASH, RTMP), and embeddable players like YouTube, Vimeo, Twitch, DailyMotion, Facebook, and SoundCloud. MediaElement.js is a set of custom Flash plugins that mimic the HTML5 MediaElement API for browsers that don't support HTML5 or don't support the media codecs you're using. Instead of using Flash as a fallback, Flash is used to make the browser seem HTML5 compliant and enable codecs like H.264 (via Flash) on all browsers. In general, MediaElement.js supports IE11+, MS Edge, Chrome, Firefox, Safari, iOS 8+ and Android 4.0+. It is strongly recommended to read the entire documentation and check the demo folder to get the most out of this package.
    Downloads: 1 This Week
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  • 21
    Middy

    Middy

    The stylish Node.js middleware engine for AWS Lambda

    Middy is a very simple middleware engine that allows you to simplify your AWS Lambda code when using Node.js. If you have used web frameworks like Express, then you will be familiar with the concepts adopted in Middy and you will be able to get started very quickly. A middleware engine allows you to focus on the strict business logic of your Lambda and then attach additional common elements like authentication, authorization, validation, serialization, etc. in a modular and reusable way by decorating the main business logic. One of the main strengths of serverless and AWS Lambda is that, from a developer perspective, your focus is mostly shifted toward implementing business logic. Anyway, when you are writing a handler, you still have to deal with some common technical concerns outside business logic, like input parsing and validation, output serialization, error handling, etc.
    Downloads: 1 This Week
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  • 22
    Mocha

    Mocha

    A feature-rich JavaScript test framework running on Node.js

    Mocha is a feature-rich JavaScript test framework running on Node.js and in the browser, making asynchronous testing simple and fun. Mocha tests run serially, allowing for flexible and accurate reporting, while mapping uncaught exceptions to the correct test cases. Hosted on GitHub. Mocha runs in the browser. Every release of Mocha will have new builds of ./mocha.js and ./mocha.css for use in the browser. Mocha is the most-depended-upon module on npm and Mocha is an independent open-source project, maintained exclusively by volunteers. Given Mocha’s use of function expressions to define suites and test cases, it’s straightforward to generate your tests dynamically. No special syntax is required — plain ol’ JavaScript can be used to achieve functionality similar to “parameterized” tests, which you may have seen in other frameworks.
    Downloads: 1 This Week
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  • 23
    Networked-Aframe

    Networked-Aframe

    Web framework for building multi-user virtual reality experiences

    Multi-user VR on the Web. A framework for writing multi-user VR apps in HTML and JS. Built on top of A-Frame. Follow the NAF Getting Started tutorial to build your own example from scratch, including setting up a local server. Networked-Aframe works by syncing entities and their components to connected users. To connect to a room you need to add the networked-scene component to the a-scene element. For an entity to be synced, add the networked component to it. By default the position and rotation components are synced, but if you want to sync other components or child components you need to define a schema. For more advanced control over the network messages see the sections on Broadcasting Custom Messages and Options. Create an instance of a template to be synced across clients. The position and rotation will be synced by default. The buffered-interpolation is added to allow for less network updates while keeping smooth motion.
    Downloads: 1 This Week
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  • 24
    Pennywise

    Pennywise

    Cross-platform application to open any website or media

    Cross-platform application to open any website or media in a floating window. Pennywise opens any website or media in a small floating window that remains on top of all other applications. Pennywise windows stays up all the time. No need to keep struggling with alt + tab, use Pennywise for easy multitasking. To enable flash support, copy or link Chrome's Pepperflash plugin into your $HOME/.pennywise-flash. You can find the plugin at the installation path of Chrome. Use it as a floating window for your calendar/checklist/assigned-tickets etc. Watching tutorial while you code? Open the video in Pennywise and keep it in front of you. Making a video course? Open the demo in Pennywise and show the output in real time. Working on some web UI? Open it in Pennywise to avoid pressing alt + tab again and again. Play some video, watch some talk or play some TV series while you work. Working on something non-familiar? Open the docs in Pennywise.
    Downloads: 1 This Week
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  • 25
    Reagent

    Reagent

    A minimalistic ClojureScript interface to React.js

    Reagent is a minimalistic ClojureScript interface to React that enables developers to write efficient React components using plain ClojureScript functions and data, leveraging a Hiccup-like syntax and immutable state to simplify UI creation. React is pretty darn fast, and so is Reagent. It should even be faster than plain old javascript React a lot of the time, since ClojureScript allows us to skip a lot of unnecessary rendering (through judicious use of React's shouldComponentUpdate). The ClojureScript overhead is kept down, thanks to lots of caching. Code size is a little bigger than React.js, but still quite small. The todomvc example clocks in at roughly 79K gzipped, using advanced compilation.
    Downloads: 1 This Week
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