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.

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  • 1
    Expand is an Open Source tool for easily developing professional Web applications. Is based on JEE5 standard technologies, annotations and pojos. Includes rapid prototyping features and a set of frameworks and wizards to ultra-fast creation of Web apps.
    Downloads: 0 This Week
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  • 2
    ExpressJS.com

    ExpressJS.com

    The Express.js Website

    This repository contains the source for the Express web site and documentation, the canonical reference for developers using the Express framework. It organizes material into API reference, getting-started guides, best practices, and topic-focused explanations such as routing, middleware, error handling, templating, and performance. Versioned docs help readers match API behavior to the framework version they’re running, reducing confusion during upgrades. The site showcases common patterns through concise examples, making it easy to translate concepts into working code. In addition to core Express usage, the documentation surfaces ecosystem guidance on things like security headers, structured logging, and integration with view engines or ORMs. Because it is open to community contributions, the documentation evolves alongside Express itself, reflecting real-world questions and solutions.
    Downloads: 0 This Week
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  • 3
    ExtJS client and server side extension with a built-in ORM solution that can be used separately. Integration with Spring, JPA and JCR on server side as well as client side improved controls will simplify your development process and design decisions.
    Downloads: 0 This Week
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  • 4
    ExtPascal FastCGI DHTML Forms'  Server

    ExtPascal FastCGI DHTML Forms' Server

    Create a fast ExtJS compiled fastcgi server

    ExtJS server sources for Lazarus Free Pascal on GNU LGPL license. After sharing my Lazarus upgrade, italians reviewed and shared it again. From my bitbucket.org/matthieugiroux account. Ext Pascal actually uses Ext JS 3.2.1 and Lazarus 1.6 or 1.8 RC5.
    Downloads: 0 This Week
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  • 5
    A WYSIWYG XML editor. The goal of this editor is to enable (web)developers to create an easy to use interface for authors to edit XML content. See the wiki for a more detailed description.
    Downloads: 0 This Week
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  • 6
    'Extrakt' provides you with an plugin-based, easy to use PHP framework for fetching dynamic content from other pages on the internet, passing parameters either by GET or by POST. A demo application is available at: http://www.linuxuser.at/vuln-search
    Downloads: 0 This Week
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  • 7
    Framework for Advanced Developments in PHP : A tool to develop complex websites, including search engine, query layer, administration panel in progress... Cache template generation, on the fly library creation to build business applications.
    Downloads: 0 This Week
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  • 8
    FDJT is a lightweight portable Web toolkit. In general, FDJT does not add new abstractions to the underlying Web DOM and UI models, but adds functionality to the abstractions already there.
    Downloads: 0 This Week
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  • 9
    Fabriq Framework
    Fabriq, a rapid development framework for PHP that makes use of MVC, DRY, and ORM.
    Downloads: 0 This Week
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  • 10
    Fabriq Modules
    This project manages modules that can be used with the Fabriq framework. Module functionality was added in Fabriq version 1.3
    Downloads: 0 This Week
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  • 11
    Facets is a web application framework that leverages a simple MVC architecture for the server side and a feature-packed Javascript component model for the client. The two pieces are designed to be seemlessly integrated for very dynamic AJAX-style apps.
    Downloads: 0 This Week
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  • 12
    Fastify DX

    Fastify DX

    A Full Stack Framework based on Fastify and Vite

    Fastify DX is an upcoming full stack framework built on top of Fastify and Vite. In this early stage, we're working to define a Universal Route Module API. Currently, only Fastify v3 is supported, v4 support is already in the works. Fastify DX is currently in alpha. Right now the focus is on implementing the same API for React, Vue, Solid and Svelte. A minimal zx-based CLI for enhanced Developer Experience is planned next. Subscribe to this newsletter to hear about the public beta.
    Downloads: 0 This Week
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  • 13
    Feeling Responsive

    Feeling Responsive

    »Feeling Responsive« is a free flexible theme for Jekyll

    Feeling Responsive is a free flexible theme for Jekyll built on the Foundation framework. You can use it for your company site, as a portfolio or as a blog.
    Downloads: 0 This Week
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  • 14
    Fighting Fantasy Framework

    Fighting Fantasy Framework

    A complete web framework to create online Fighting Fantasy adventures

    With FFFramework you can create your own interactive adventure or gamebook with minimum html knowledge and publish it on the web. Just edit the html files in /game catalogue. The tutorial is included. The project provides the Fighting Fantasy mechanics including fight, dice throwing, testing skil and luck . Enjoy :) Example: http://www.dudziarz.net/fff
    Downloads: 0 This Week
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  • 15
    A simple, yet powerful JavaScript framework that can help you build Web 2.0 applications. The framework is seperated into modules in order to reduce download times.
    Downloads: 0 This Week
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  • 16
    Fire Detector

    Fire Detector

    Detect web framework and javascript libraries run on browsing website

    When you surf the internet with Fire Detector, You can also find more unknown frameworks and libraries. It is based on [LibrarySniffer](https://github.com/justjavac/ChromeSnifferPlus/). I've replaced some deprecated javascript interfaces with asynchronous ones adopted by Firefox for its add-ons --- ### Limitations - WebExtension only works on sites that allow content scripts. With this WebExtension, You can detect:
    Downloads: 0 This Week
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  • 17
    FireWeb

    FireWeb

    Java Single Page Web Application Framework

    Java Single Page Application Framework. Using POJO/JavaScript/WebSocket/HTML. Without any scripting - only pure Java classes. Simply and easy to learn, use and extend.
    Downloads: 0 This Week
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  • 18
    Flask Debug-toolbar

    Flask Debug-toolbar

    A toolbar overlay for debugging Flask applications

    This extension adds a toolbar overlay to Flask applications containing useful information for debugging. The toolbar will automatically be injected into HTML responses when debug mode is on. In production, setting app.debug = False will disable the toolbar. This extension also supports the Flask app factory pattern by separately creating the toolbar and later initializing it for an app.
    Downloads: 0 This Week
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  • 19

    Flask-AppBuilder

    Rapid web application development (python + Flask)

    Simple and rapid Application builder, built on top of Flask. includes detailed security, auto form generation, google charts and much more. Demo on: http://flaskappbuilder.pythonanywhere.com/
    Downloads: 0 This Week
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  • 20
    Flat UI Free
    Flat UI Free is made on the basis of Twitter Bootstrap 3 in a stunning flat-style. Flat UI Free contains many basic and complex components which are great for designers to have at hand: buttons, inputs, button groups, selects, checkboxes and radio-buttons, tags, menus, progress bars, sliders, navigation elements, and more. Use the free/updated version of Bootstrap generator – Startup App. We have considered your needs in developing the HTML version of our bootstrap theme, which contains the same elements as the PSD version and is perfect for creating great websites. With this Framework, you can spend even less time on routine work, saving that time for creativity. Colored, stylish icons can easily be modified and used in a wide variety of projects, as they contain original layers. Glyphs are also available in PSD, HTML/CSS, and SVG formats. Bootstrap theme design also includes color swatches.
    Downloads: 0 This Week
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  • 21
    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: 0 This Week
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  • 22
    FlightFeather's goal is "social networking for everyone". This means that anyone should have a chance to run a popular social networking site -- on minimal hardware, and without wasting bandwidth.
    Downloads: 0 This Week
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  • 23
    A PHP web application framework centered around a page/control/rpc server model with a framework for modules and permissions. Support for OpenID/Facebook Connect included. All data is persisted in a JSON object store, so no SQL server is required.
    Downloads: 0 This Week
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  • 24
    Fluxion
    The Fluxion framework is a prototype data integration system using Semantic Web technologies.
    Downloads: 0 This Week
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  • 25
    Foomfum is PHP Object-oriented framework for rapid web-applications development. It's object-oriented, template-based, supports visual themes and multi-language applications.
    Downloads: 0 This Week
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