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.

  • Ship Agents Faster Icon
    Ship Agents Faster

    Transform your applications and workflows into powerful agentic systems at global scale.

    Gemini Enterprise Agent Platform lets you rapidly build, scale, govern and optimize production-ready agents grounded in your organization's data. The platform enables developers to build custom or pre-built agents for virtually any use case. New customers get $300 in free credits.
    Start Free
  • Paessler: Easy to Use With Enterprise Power. Free Trial Icon
    Paessler: Easy to Use With Enterprise Power. Free Trial

    A low-code dashboard makes monitoring intuitive for any admin, while scripting and custom sensors give experts full control.

    You shouldn't have to choose between a monitoring tool that's easy to use and one that's powerful enough for a complex environment. PRTG's low-code interface lets any admin build dashboards, set alerts and monitor devices without scripting, while custom sensors and full API access are there when your team needs deeper control. One platform, no compromise. Download a free 30-day trial now.
    Get Free Download
  • 1
    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
    Last Update:
    See Project
  • 2
    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
    Last Update:
    See Project
  • 3
    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
    Last Update:
    See Project
  • 4
    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
    Last Update:
    See Project
  • Train ML Models With SQL You Already Know Icon
    Train ML Models With SQL You Already Know

    BigQuery automates data prep, analysis, and predictions with built-in AI assistance.

    Build and deploy ML models using familiar SQL. Automate data prep with built-in Gemini. Query 1 TB and store 10 GB free monthly.
    Start Free
  • 5
    Neiki's Gallery

    Neiki's Gallery

    Vanilla JavaScript image gallery & lightbox

    Neiki's Gallery is a lightweight, production-ready image gallery and lightbox library built with vanilla JavaScript and CSS. It requires no dependencies and can be integrated with a single <script> tag, with automatic initialization out of the box. It provides a highly customizable experience for modern web projects, combining performance, flexibility, and rich UI interactions. Designed for both developers and end users, it supports responsive layouts, advanced lightbox features, touch and keyboard navigation, lazy loading, and seamless media handling including images and video. The library is modular and extensible, offering plugins, event hooks, and deep customization through JavaScript or HTML data attributes. It is optimized for performance, accessibility, and large-scale galleries while maintaining smooth animations and a modern visual style.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    A next generation framework to wire existing javascript frameworks (Ext, Qooxdoo, Dojo, etc.) to Server code written in any .NET language.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    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: 0 This Week
    Last Update:
    See Project
  • 8
    NexT

    NexT

    An elegant theme for Hexo

    One theme, three appearances, choose yours. Through the theme (also known as Scheme) in the theme, you can easily change the appearance of your blog, and almost all configurations are equally applicable. Thanks to the enthusiastic users of NexT for their contributions, NexT now supports 10 languages. NexT uses Tomorrow's code to highlight color schemes, only one line of configuration is needed to choose your favorite color scheme. NexT has a rich and simple configuration, combined with third-party services to create your own blog. NexT insists on hiding complex details, providing as few and simple settings as possible, and maintaining maximum ease of use. Use third-party services to extend the functionality of the site. NexT supports a variety of common third-party services. In addition to the syntax supported by Markdown, NexT uses the label feature provided by Hexo to provide you with quick insertion of special styled content when writing documents.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    NoLess is a framework written in PHP integrated with JavaScript. The purpose is to create a lightweight server-friendly versatile tool that can be used for creating any type of object-oriented web application.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Endpoint Management with Remote Control Built In Icon
    Endpoint Management with Remote Control Built In

    Patch, monitor, and connect to Windows and macOS devices from one console

    Splashtop AEM handles patching, alerts, scripts, and inventory, and unattended remote control is included. When something needs hands-on work, you’re one click away instead of switching tools.
    Start Free Trial
  • 10
    Nodejs Expressjs MongoDB API Project

    Nodejs Expressjs MongoDB API Project

    A boilerplate for REST API Development with Node.js, Express, etc.

    A ready-to-use boilerplate for REST API Development with Node.js, Express, and MongoDB. This is a basic API skeleton written in JavaScript ES2015. Very useful to building RESTful web APIs for your front-end platforms like Android, iOS or JavaScript frameworks (Angular, Reactjs, etc). This project will run on NodeJs using MongoDB as a database. I tried to maintain the code structure easily as any beginner can also adopt the flow and start building an API. The project is open for suggestions, Bug reports and pull requests. Basic Authentication (Register/Login with hashed password). Account confirmation with 4 (Changeable) digit OTP. Email helper ready just import and use. JWT Tokens, make requests with a token after login with Authorization header with value Bearer yourToken where yourToken will be returned in Login response. Pre-defined response structures with proper status codes. Included CORS. Book example with CRUD operations. Validations added.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    NoderCMS

    NoderCMS

    Node.js + MongoDB

    Super concurrency and super high data reading speed, coupled with flexible custom models, easy-to-use templates, advanced background management system and multi-user permissions, have created a perfect NoderCMS. The inherent asynchronous non-blocking programming brought by Node.js makes NoderCMS calmly face up to millions of concurrent visits. Thanks to the non-relational database MongoDB, everything is stored in BSON format, faster and faster. Through the combination of models and custom fields, you can easily create completely different columns and various recommendation positions according to your needs. Set different authority roles according to the management process, assign different users, and let everyone focus on the current situation. The simple and easy-to-use experience brought by the Handlebars template engine can define everything without secondary development.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    The main objective of the ONE project is to enrich Digital Ecosystems with an decentralised negotiation environment and enabling tools that will allow organisations to create contract agreements for supplying integrated services as a virtual organisation
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    An open source framework for php inspired in others like Java SE's API.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Oberon PLM
    Oberon PLM is a Web based PLM/PDM, built on Oberon framework that facilitate its customization. Oberon PLM integrates people, data, processes, and business systems and provides a product information backbone for companies and their extended enterprise.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    Oclos
    A javascript/html framework for eLearning development.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    Omega PHP is a little web framework for easy deploying small web content. The project is based on robust php tools for made developer's life easier.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    Omi

    Omi

    Front end cross-frameworks framework

    Omi (pronounced /ˈomɪ/) is cross-frameworks framework base on Web Component, you can also use omio compatible IE8+ with the same grammar. One framework, Mobile & desktop & mini program. Simply download and include with <script>. Omi will be registered as a global variable. If you need to be compatible with IE8+, you can choose omio, which has almost the same API as omi, and Omi will be registered as a global variable. Omi provides the official CLI. You don't need to learn how to configure webpack, Babel or TypeScript. CLI helps you configure everything and provides various templates for different project types. Pass data through the component tree without having to pass props down manually at every level by store, auto update the view on demand. Cross frameworks(react, preact, vue, angular), components of omi are pure custom elements. Excellent compatibility(IE8+) with omio and enhanced CSS, rpx unit support base on 750 screen width.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    OmniPortal was built on the idea of having a web-portal-kernel, that could handle security, themeing, and localization. This means that you can create any web based system on top of OmniPortal (i.e. ERP, CMS, CRM) easily. Mono and .Net is supported.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19

    OopJs

    Native Java-like Script for Modern Browsers

    OopJs provides a set of functions for developing javascript applications using a class-based structure. This framework allows you to add properties and methods to the class itself (static), instances of a class (public), and even the package it resides in (internal). Supported by most modern browsers.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    The Open Optimization for Java provides a framework and the implementation of commonly-used algorithms found in Graph Theory and Network Optimization, e.g. shortest path and postman problem.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    Open eSign allows software developers and technical parties in a company to create secure, online (web-based) forms and documents that follow a business process flow and enable legally recognized electronic signatures using digital signature technology.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Open For Government is an open source enterprise automation framework. By open source enterprise automation we mean: Open Source ERP, Open Source CRM, Open Source E-Business / E-Commerce, Open Source SCM, Open Source MRP, Open Source CMMS/EAM, etc.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    OpenBase is a true fundation for any PHP site. Complete with everything from a registration and login system to a automatic database backup system, it is no wonder how openBase saves so much time.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    A suite of Open Source controls for ASP.NET. The project's aim is to develop a range of powerful controls for .NET developers that are of commercial quality, but without the cost of commercial products.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    OpenProxy (Half Object Plus Pattern) Client implements a concept across multiple address spaces by transforming the relevant object into two "halfobjects" plus protocol, one half-object in each address space.
    Downloads: 0 This Week
    Last Update:
    See Project