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
    Milligram

    Milligram

    A minimalist CSS framework

    Milligram provides a minimal setup of styles for a fast and clean starting point. Just it! Only 2kb gzipped! It's not about a UI framework. Specially designed for better performance and higher productivity with fewer properties to reset resulting in cleaner code. Hope you enjoy it! There are some ways to get started. First, see all download options available below, then choose the most suitable option for your need. Now you should add the main file of the Milligram and the CSS Reset in the header of your project. Just that! The Button, an essential part of any user experience. Buttons come in three basic styles in Milligram: The button element has flat color by default, whereas .button-outline has a simple outline around, and .button-clear is entirely clear. The List is a very versatile and common way to display items. Milligram has three types of lists.
    Downloads: 0 This Week
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  • 2
    Miraj is a lightweight open-source PHP and Javascript framework, meant on reducing the time needed to build fast and reliable websites.
    Downloads: 0 This Week
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  • 3
    Mithril.js

    Mithril.js

    A JavaScript framework for building brilliant applications

    Mithril is a modern client-side JavaScript framework for building Single Page Applications. It's small (< 10kb gzip), fast and provides routing and XHR utilities out of the box. Mithril is used by companies like Vimeo and Nike, and open source platforms like Lichess. Mithril supports IE11, Firefox ESR, and the last two versions of Firefox, Edge, Safari, and Chrome. No polyfills required. By default, Mithril views are described using hyperscript. Hyperscript offers a terse syntax that can be indented more naturally than HTML for complex tags, and since its syntax is just JavaScript, it's possible to leverage a lot of JavaScript tooling ecosystem. Mithril is all about getting meaningful work done efficiently. Doing file uploads? The docs show you how. Authentication? Documented too. Exit animations? You got it. No extra libraries, no magic.
    Downloads: 0 This Week
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  • 4
    The Mitochondrion project offers a transparent, event-driven software framework that provides multi-threaded objects, statecharts, a priority-driven queue and tools to trace and examine run-time interactions.
    Downloads: 0 This Week
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  • 5
    Mix stands for Mix Is X(cross). It is an all-round web framework comprised of PHP part and Javascript part. It aims at providing convenient ways for building websites. Developers may use it to develop any kind of software.
    Downloads: 0 This Week
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  • 6
    Mix2ool is an integrated framework (PHP + JS) for developing websites while enabling the usage of HTML5 and some other useful UI components. It's advanced from mix framework but having a big change in the view engine.
    Downloads: 0 This Week
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  • 7
    Mobi.css

    Mobi.css

    A lightweight, scalable, mobile-first CSS framework

    A lightweight, scalable, mobile-first CSS framework. The default bundle of Mobi.css provides the basic styles to build clean and elegant web pages. It's only 2.6kb after gzipped, and it's very easy to get started. Plugin system makes CSS scalable. You can import plugins to enhance Mobi.css, or use the plugin as a standalone class library. It's even possible to use a plugin without Mobi.css. Mobi.css focus on the details and provides the best user experience, especially for the content-rich webpage. It's designed for mobile, but also works awesome on desktop.
    Downloads: 0 This Week
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  • 8

    MobileME

    MobileMe is php framework for mobile developing with phonegap

    MobileMe is (will be) a php framework that will give the opportunities to the developer to create fantastic application for mobile using phonegap
    Downloads: 0 This Week
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  • 9
    Mockingoose

    Mockingoose

    A Jest package for mocking mongoose models

    Mockingoose is a mocking library for Mongoose, allowing developers to test Mongoose models by creating mock data and behavior.
    Downloads: 0 This Week
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  • 10

    Modular Gaming

    Modular Gaming Open Source Persistent Browser Based Game Framework

    We are in the process of creating a open source persistent browser based web game (PBBG) framework which will have all the features to get you started and let you start developing your unique features without having to write all the basics. We have taken a modular approach, you can use only the modules you want. If you wanted just a forum you could enable only the core, user and forum modules. We are building our framework using Kohana which is an open source, object oriented (H)MVC web framework built using PHP5 by a team of volunteers that aims to be swift, secure, and small. We are using Kohana 3.3 You can view a demo at http://demo.modulargaming.com If you have any questions, bugs or feature requests feel free to post them on the issue tracker at GitHub. https://www.github.com/modulargaming/modulargaming Licensed under a BSD license. Modular Gaming can be used legally for any open source, commercial, or personal project.
    Downloads: 0 This Week
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  • 11
    Moleculer

    Moleculer

    Progressive microservices framework for Node.js

    Moleculer is a progressive microservices framework for Node.js, designed to help developers build efficient, reliable, and scalable applications with a focus on simplicity and performance.
    Downloads: 0 This Week
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  • 12
    MoonDragon is an object-oriented Content Managment System written on PHP 5.0 You can find more about it on http://launchpad.net/moondragon
    Downloads: 0 This Week
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  • 13
    Mori

    Mori

    ClojureScript's persistent data structures and supporting API

    Mori brings ClojureScript's efficient persistent data structures and functional APIs into vanilla JavaScript, enabling immutability and functional programming patterns with performant collections in JS. The installed package contains a single optimized JavaScript file mori.js. Load mori in your Node.js programs as you would any other module. For vectors and maps we provide efficient thaw and freeze operations. All Mori maps and sets support all the non-mutating methods of the proposed ES6 Map and Set interfaces. The main difference with the spec is that key lookup is based on value not reference. keys, values, and entries methods return the proposed mutable iterators.
    Downloads: 0 This Week
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  • 14
    Move.js

    Move.js

    CSS3 backed JavaScript animation framework

    Move.js is a small JavaScript library making CSS3 backed animation extremely simple and elegant. Increment prop by val, where val is an Number (click several times). Decrement prop by val, where val is an Number (click several times). Set animation duration to n which is a Number or a string such as "4s". Translate x and optionally y axis. Set animation-delay to n which is a Number or a string such as "4s". Move is packaged with a minified version, re-built each release. We can also pass flags to uglifyjs.
    Downloads: 0 This Week
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  • 15
    MudMop, abbr. for Multi-User Discontinuous system MOdeling Platform, is an enterprise application framework, stands on modeling real world business which is discontinuous, and build business perspective data view and process operations to multi-users
    Downloads: 0 This Week
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  • 16
    Multiform allows creation of Web Applications by defining their processes and business objects in a declarative XML-based language. It's made of a Javascript framework and an XSL compiler to get the application skeleton from the definitions.
    Downloads: 0 This Week
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  • 17
    MyAppFW is basic php application framework designed to be used as a base or learning guide for PHP projects that need (Multiple) Template Support, Advanced DB Support, Proper Email handling and some other basic useful functions for live dynamic websites.
    Downloads: 0 This Week
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  • 18
    MythCore

    MythCore

    Myth Framework Core Libraries (part of MythSDP)

    MythCore is a PHP framework that allows the developer to use a C# .NET like object oriented programming approach. It provides the essential classes that the MythSDP platform and the MythFramework builds upon. The goal is to create a library that enables the programmer to use a fully object oriented approach that has the "feel" of .NET and Java programming. Our main goal is ease of use and rapid application development. However, performance and small-footprint are some of the main design goals as well.
    Downloads: 0 This Week
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  • 19
    NES.css

    NES.css

    NES-style CSS Framework

    NES.css is a NES-style(8bit-like) CSS Framework. NES.css is available via either npm (preferred), Yarn, or a CDN. Our package.json contains some additional metadata under the following keys, path to our main Sass source file, path to our non-minified CSS. NES.css doesn't provide any fonts, but we do maintain the following list of fonts that we recommend for usage alongside the library. NES.css only provides components. You will need to define your own layout. The recommended font for NES.css is Press Start 2P. However, Press Start 2P only supports English characters. When you're using this framework with any language other than English, please use another font. Follow the Google Fonts instructions about how to include them. NES.css only requires CSS and doesn't depend on any JavaScript.
    Downloads: 0 This Week
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  • 20
    A free & experimental ,HTML5, CSS3, Ajax lightwheight framework for mobile devices development. First intended as educationnal purposes. May evolve upon my free time and your thoughts
    Downloads: 0 This Week
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  • 21
    NWic is a .NET web development framework ported from a Java open-source project called jWic. NWic helps software developers building rich-client style web applications using the MVC design pattern. The UI is updated using the integrated AJAX features.
    Downloads: 0 This Week
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  • 22
    NativeUI

    NativeUI

    The most crossbrowser web UI library that uses native browser elements

    NativeUI is a CSS and JavaScript library that adheres to the KISS principle and focuses on utilizing standard features provided by browsers, which are most optimized for each specific platform, and therefore provide the best performance and user experience. The library ensures cross-browser behavior and styling of built-in browser elements of user interface and text formatting, adding commonly used user interface elements such as modal windows, image viewer, menus, tabs, form messages, etc. It also contains some useful JavaScript functions for development, such as request() and getFormData(). You can see the demo here: https://nativeui.sourceforge.io/
    Downloads: 0 This Week
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  • 23
    Neiki's Charts

    Neiki's Charts

    Lightweight SVG chart Web Component

    Neiki's Charts is a lightweight SVG chart library built as a native Web Component. Drop a single script tag into any HTML page and get four chart types — Line, Bar, Pie, and Scatter — with no build step, no framework, and zero dependencies. CSS is bundled automatically, so one file is all you need. The component uses Shadow DOM for style encapsulation and fits cleanly into any project without CSS conflicts. Charts are fully responsive, support light and dark themes with automatic prefers-color-scheme detection, and expose a simple JS API for data and options. Tooltips, legends, animations, and grid lines are all controlled through standard HTML attributes. All rendering is pure SVG — no Canvas — making charts scalable, printable, and inspectable in DevTools. Accessibility is built in with proper ARIA roles, keyboard-navigable legends, and full prefers-reduced-motion support.
    Downloads: 0 This Week
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  • 24
    Neiki's Code Editor

    Neiki's Code Editor

    Lightweight embeddable code editor Web Component with syntax highlight

    Neiki's Code Editor is a lightweight embeddable code editor built as a native Web Component using vanilla JavaScript. It runs without dependencies or build tools and can be dropped into any website via a single script tag. The editor provides a modern development experience with syntax highlighting, themes, line numbers, search, auto-indentation, and fullscreen support. Designed for flexibility and performance, it uses Shadow DOM for style isolation and supports multiple languages including JavaScript, HTML, CSS, JSON, and Markdown. It is fully customizable through attributes, CSS variables, and a simple JavaScript API, making it suitable for documentation, demos, and embedded development tools.
    Downloads: 0 This Week
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  • 25
    Neiki's Cookie Banner

    Neiki's Cookie Banner

    Lightweight, dependency-free cookie consent banner (GDPR/ePrivacy compliant) in vanilla JS. Fully customizable and accessible.

    Neiki's Cookie Banner is a lightweight, drop-in cookie consent solution for any website that needs to comply with GDPR, ePrivacy, and similar privacy regulations — without dragging in a heavy third-party SDK or tying your site to a paid SaaS. It is built from the ground up in vanilla JavaScript with zero dependencies, so it works on any stack — from a static HTML page to a WordPress theme, Laravel app, Next.js site, or anything in between. Drop in one file and you have a fully functional, accessible, themeable consent banner in under a minute.
    Downloads: 0 This Week
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