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.

  • Next-Gen Encryption for Post-Quantum Security | CLEAR by Quantum Knight Icon
    Next-Gen Encryption for Post-Quantum Security | CLEAR by Quantum Knight

    Lock Down Any Resource, Anywhere, Anytime

    CLEAR by Quantum Knight is a FIPS-140-3 validated encryption SDK engineered for enterprises requiring top-tier security. Offering robust post-quantum cryptography, CLEAR secures files, streaming media, databases, and networks with ease across over 30 modern platforms. Its compact design, smaller than a single smartphone image, ensures maximum efficiency and low energy consumption.
    Learn More
  • Award-Winning Medical Office Software Designed for Your Specialty Icon
    Award-Winning Medical Office Software Designed for Your Specialty

    Succeed and scale your practice with cloud-based, data-backed, AI-powered healthcare software.

    RXNT is an ambulatory healthcare technology pioneer that empowers medical practices and healthcare organizations to succeed and scale through innovative, data-backed, AI-powered software.
    Learn More
  • 1
    React Native for Web

    React Native for Web

    React Native Components and APIs for the Web

    React Native for Web is an accessible implementation of React Native's Components and APIs that is interoperable with React DOM. Accessible HTML. Support different devices and input modes, render semantic tags. High-quality interactions. Support gestures and multiple input modes (touch, mouse, keyboard). Reliable styles. Rely on scoped styles and automatic vendor-prefixing. Support RTL layouts. Responsive containers. Respond to element resize events. Incremental adoption. Interoperates with existing React DOM components. Bundle only what you use. React Native for Web is used in production web apps by Twitter, Flipkart, Uber, Major League Soccer, and many others. It also powers web support in multi-platform React projects such as Expo, React Native Elements, React Native Paper, and React Native Base.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 2
    React-Bootstrap

    React-Bootstrap

    Bootstrap components built with React

    React-Bootstrap replaces the Bootstrap JavaScript. Each component has been built from scratch as a true React component, without unneeded dependencies like jQuery. As one of the oldest React libraries, React-Bootstrap has evolved and grown alongside React, making it an excellent choice as your UI foundation. Built with compatibility in mind, we embrace our bootstrap core and strive to be compatible with the world's largest UI ecosystem. By relying entirely on the Bootstrap stylesheet, React-Bootstrap just works with the thousands of Bootstrap themes you already love. The React component model gives us more control over form and function of each component. Each component is implemented with accessibility in mind. The result is a set of accessible-by-default components, over what is possible from plain Bootstrap.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 3
    Relay

    Relay

    JavaScript framework for building data-driven React applications

    Relay is data-fetching turned declarative. Components declare their data dependencies, without worrying about how to fetch them. Relay guarantees that the data each component needs is fetched and available. This keeps components decoupled and promotes reuse. With Relay, components and their data dependencies can be quickly modified without modifying other parts of the system. That means you won't accidentally break other components as you refactor or make changes to your app. Relay's compiler aggregates and optimizes the data requirements for your entire app, so that they can be efficiently fetched in a single GraphQL request. Relay handles the heavy lifting to ensure the data declared by your components is fetched in the most efficient way. For example, by deduplicating identical fields, and precomputing information used at runtime, among other optimizations. Relay also supports executing GraphQL Mutations, optionally with optimistic updates, and updates to local data.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 4
    ShareDB

    ShareDB

    Realtime database backend based on Operational Transformation (OT)

    ShareDB is a realtime database backend based on Operational Transformation (OT) of JSON documents. It is the realtime backend for the DerbyJS web application framework. Realtime synchronization of any JSON document. Synchronous editing API with asynchronous eventual consistency. Projections to select desired fields from documents and operations. Middleware for implementing access control and custom extensions. Ideal for use in browsers or on the server. In-memory implementations of database and pub/sub for unit testing. Access to historic document versions. Realtime user presence syncing.
    Downloads: 2 This Week
    Last Update:
    See Project
  • Skillfully - The future of skills based hiring Icon
    Skillfully - The future of skills based hiring

    Realistic Workplace Simulations that Show Applicant Skills in Action

    Skillfully transforms hiring through AI-powered skill simulations that show you how candidates actually perform before you hire them. Our platform helps companies cut through AI-generated resumes and rehearsed interviews by validating real capabilities in action. Through dynamic job specific simulations and skill-based assessments, companies like Bloomberg and McKinsey have cut screening time by 50% while dramatically improving hire quality.
    Learn More
  • 5
    SuperAgent

    SuperAgent

    Ajax for Node.js and browsers (JS HTTP client)

    SuperAgent is light-weight progressive ajax API crafted for flexibility, readability, and a low learning curve after being frustrated with many of the existing request APIs. It also works with Node.js! Small progressive client-side HTTP request library, and Node.js module with the same API, supporting many high-level HTTP client features. Browser-ready versions of this module are available via jsdelivr, unpkg, and also in the node_modules/superagent/dist folder in downloads of the superagent package. If you are using browserify, webpack, rollup, or another bundler, then you can follow the same usage as Node. SuperAgent is easily extended via plugins. The Node client supports making requests to Unix Domain Sockets. DELETE, HEAD, PATCH, POST, and PUT requests can also be used, simply change the method name. Absolute URLs can be used. In web browsers absolute URLs work only if the server implements CORS.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 6
    TableExport

    TableExport

    The simple, easy-to-implement library to export HTML tables to xlsx

    The simple, easy-to-implement library to export HTML tables to xlsx, xls, csv, and txt files. To use this library, include the FileSaver.js library, and TableExport library before the closing body tag of your HTML document. In order to provide Office Open XML SpreadsheetML Format ( .xlsx ) support, you must include the following third-party library in your project before both FileSaver.js and TableExport. To support legacy browsers ( Chrome < 20, Firefox 13, Opera 12.10, IE, 10, Safari 6 ) include the Blob.js polyfill before the FileSaver.js script. Additional properties can be passed-in to customize the look and feel of your tables, buttons, and exported data. Notice that by default, TableExport will create export buttons for three different filetypes xls, csv, txt. You can choose which buttons to generate by setting the formats property to the filetype(s) of your choice.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 7
    Tracing Framework

    Tracing Framework

    Web Tracing Framework libraries and extensions

    The Web Tracing Framework (WTF) is an open source suite of tools, libraries, and visualizers created by Google to help developers analyze and optimize the performance of complex web applications. By adding lightweight instrumentation to their code, developers can trace execution flow, identify bottlenecks, and detect performance regressions. The framework provides fine-grained insights into application behavior, making it particularly useful for achieving smooth, high-performance experiences, such as maintaining 60fps animations in web interfaces. It includes visualization tools that allow for detailed analysis of timing, resource usage, and event flow, enabling developers to diagnose and fix inefficiencies effectively. While still experimental, WTF is designed to be extensible and community-driven, encouraging contributions and adaptations for various types of web applications.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 8
    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
    Last Update:
    See Project
  • 9
    accountill

    accountill

    Fullstack open source Invoicing application made with MongoDB

    This is a side project I've been working on. A full stack invoicing application made using the MERN stack (MongoDB, Express, React & Nodejs), specially designed for freelancers and small businesses, but can be used for almost any type of business need. With this application, you can send beautiful invoices, receipts, estimates, quotes, bills etc to your clients. Jump right off the Live App and start sending invoice or download the entire Source code and run it on your server. This project is something I've been working on in my free time so I cannot be sure that everything will work out correctly. But I'll appreciate you if can report any issue. Send invoices, receipts, estimates, quotations and bills via email. Generate and send/download pdf invoices, receipts, estimates, quotations and bills via email. Set due date. Automatic status change when payment record is added. Payment history section for each invoice with record about payment date, payment method and extra note.
    Downloads: 2 This Week
    Last Update:
    See Project
  • The Most Powerful Software Platform for EHSQ and ESG Management Icon
    The Most Powerful Software Platform for EHSQ and ESG Management

    Addresses the needs of small businesses and large global organizations with thousands of users in multiple locations.

    Choose from a complete set of software solutions across EHSQ that address all aspects of top performing Environmental, Health and Safety, and Quality management programs.
    Learn More
  • 10
    i18n

    i18n

    i18n wrapper and Koa middleware for Lad

    i18n wrapper and Koa middleware for Lad.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 11
    koa-helmet

    koa-helmet

    Important security headers for koa

    koa-helmet is a wrapper for helmet to work with koa. It provides important security headers to make your app more secure by default.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 12
    lad.sh

    lad.sh

    Demo for Lad - The Best Node.js Framework

    Lad scaffolds a Koa web app and API framework for Node.js. Built on top of Koa, the successor to Express. This full-stack web server uses the latest versions of Pug, Gulp, Sass, PostCSS, Bootstrap, and more. Inspired by Stripe, the RESTful API server also uses Koa and has a complete stack with error handling, authentication, and tests. Layered on top of Bree, the job scheduler supports cron and human-readable syntax, child processes, and more. Redirect HTTP to HTTPS traffic with support for Let's Encrypt Free SSL Certbot validation.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 13
    parrot-mocker-web

    parrot-mocker-web

    Simple web server to forward received requests to real servers

    This project provides a simple mock server, which works with the Chrome plugin parrot-mocker. Install the Chrome plugin, parrot-mocker, so that your pages have the ability to intercept requests and forward to this mock server. Other usages without the plugin can refer to the parrot-mocker project. For example, if deployed in leancloud, please open your Chrome browser and visit the index page first. Other instances like now.sh are similar. Now you will find that requests are forwarded to the mock server, which are also visiable at index page. If visiting other pages in the same domain, their requests will also be forwarded to this mock server.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 14
    request-received

    request-received

    Route middleware for Koa and Express

    Route middleware for Koa and Express that adds a request received high-resolution timer and Date to the request object using easily accessible Symbols to prevent request object pollution. Made for Cabin.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 15
    restify

    restify

    The future of Node.js REST development

    restify is a framework, utilizing connect style middleware for building REST APIs. A Node.js web service framework optimized for building semantically correct RESTful web services ready for production use at scale. restify optimizes for introspection and performance, and is used in some of the largest Node.js deployments on Earth. restify is used by some of the industry's most respected companies to power some of the largest deployments of Node.js on planet Earth. Running at scale requires the ability to trace problems back to their origin by separating noise from signal. restify is built from the ground up with post-mortem debugging in mind. Staying true to the spec is one of the foremost goals of the project. You will see references to RFCs littered throughout GitHub issues and the codebase.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 16
    serverless-express

    serverless-express

    Run Express and other Node.js frameworks on AWS Serverless

    Serverless Express is a framework for deploying Express.js applications on AWS Lambda and other serverless environments, enabling efficient, scalable web applications without managing infrastructure.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 17
    PyGObject for Windows

    PyGObject for Windows

    All-In-One PyGI/PyGObject for Windows Installer

    Cross-platform python dynamic bindings of GObject-based libraries for Windows 32-bit and 64-bit.
    Downloads: 12 This Week
    Last Update:
    See Project
  • 18
    Neutralinojs

    Neutralinojs

    Portable and lightweight cross platform app development framework

    Neutralino is a lightweight and portable application development framework. It lets you develop cross-platform applications using JavaScript, HTML and CSS. Why Neutralinojs? In Electron and NWjs you have to install NodeJs and hundreds of dependency libraries. Embedded Chromium and Node creates large overhead and makes even simple apps like “hello world” considerable in size. Neutralino offers a lightweight and portable SDK which is an alternative for Electron and NW.js also with many advantages.
    Downloads: 18 This Week
    Last Update:
    See Project
  • 19

    scriptHelper

    integration between Java and scripting languages

    scriptHelper is a Java library allowing a simple integration between Java code and various script languages. This library also allows to debug these scripts in the context of a Java program.
    Downloads: 28 This Week
    Last Update:
    See Project
  • 20
    Axe

    Axe

    Logger-agnostic wrapper that normalizes logs regardless of arg style

    Logger-agnostic wrapper that normalizes logs regardless of arg style. Great for large dev teams, old/new projects, and works w/Pino, Bunyan, Winston, console, and more. It is lightweight, performant, highly-configurable, and automatically adds OS, CPU, and Git information to your logs. Hooks, dot-notation remap, omit, and pick of metadata. Axe was built to provide consistency among development teams when it comes to logging. You not only have to worry about your development team using the same approach to writing logs and debugging applications, but you also have to consider that open-source maintainers implement logging differently in their packages. No matter how your team or underlying package style arguments when invoked with logger methods, Axe will clean it up and normalize it for you. This is especially helpful as you can see outliers much more easily in your logging dashboards, and pinpoint where in your application you need to do a better job of logging at.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 21
    Bilibili Helper

    Bilibili Helper

    Auxiliary tool that can replace the player, push notifications, etc.

    Bilibili (bilibili.com) Auxiliary tool that can replace the player, push notifications and perform some shortcut operations. Bilibili (bilibili.com) is an auxiliary tool that can download videos, query the sender of the barrage, and some very useful live broadcast area functions. An auxiliary extension for Bilibili (bilibili.com) which allows users to bypass playback restrictions, replace video players and use shortcuts. Starting from a certain version, Bilibili Assistant uses special technical methods to realize the unlocking function of regional restrictions. It was known to only be able to re-fix the feature via a proxy method, but the cost was prohibitive and we decided not to maintain the feature anymore. Please use an extension that specializes in this type of service, such as unblock youku.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 22
    Bootlint

    Bootlint

    HTML linter for Bootstrap projects

    Bootlint is a tool that checks for several common HTML mistakes in webpages that are using Bootstrap in a fairly "vanilla" way. Vanilla Bootstrap's components/widgets require their parts of the DOM to conform to certain structures. Bootlint checks that instances of Bootstrap components have correctly structured HTML. Optimal usage of Bootstrap also requires that your pages include certain <meta> tags, an HTML5 doctype declaration, etc.; Bootlint checks that these are present. Bootlint assumes that you are using Bootstrap's default class names in your webpage, as opposed to taking advantage of the "mixins" functionality of Less or Sass to map them to custom class names. If you are using mixins, Bootlint may report some false-positive warnings. However, there are some Bootlint checks that are applicable even if you are using mixins pervasively.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23
    Bootstrap Native

    Bootstrap Native

    If you are looking for Bootstrap without jQuery, this is it.

    The lighter and more compact set of JavaScript components for Bootstrap is sourced with a modern ES6+ codebase and strong TypeScript definitions. At about half the size of the original and around 12kb gZipped, this library does most of Bootstrap & Popper combined. We launched the project back in 2015 with the goal of debunking the "write less do more" myth, meanwhile the Bootstrap developers themselves have decided to drop jQuery, however, we decided to keep maintaining the project for its many benefits and the learning experience. If you mainly use Bootstrap plugins for your projects, why not use a much lighter, potentially faster library, see a different perspective on the same challenges, interact with a less crowded community, and get a better chance to learn or say hi! The Alert component covers the specific original events and public methods, but just like the original plugin, does not provide any initialization option.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 24
    Bootstrap Switch

    Bootstrap Switch

    Turn checkboxes and radio buttons in toggle switches

    Turn checkboxes and radio buttons into toggle switches. Created by Mattia Larentis, maintained by Emanuele Marchi and Peter Stein with the help of the community. Compatible with Bootstrap 4, Bootstrap 3 and Bootstrap 2.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    Caption

    Caption

    Get Caption, start watching

    Caption takes the effort out of finding and setting up the right subtitles. A simple design, drag & drop search, and automatic downloading & renaming let you just start watching. Caption is multi-platform, open-source, and built entirely on web technology. Caption is completely open-source. We've tried to make it as easy as possible to contribute. If you'd like to help out by adding features, working on bug fixes, or assisting in other parts of development. Caption currently uses 2 sources to gather subtitles. We're continuously adding sources, but the app's open-source nature also allows you to add your own when desired. This can be done in Caption Core. Build the actual app for all platforms (Mac, Windows and Linux).
    Downloads: 1 This Week
    Last Update:
    See Project
MongoDB Logo MongoDB