Browse free open source JavaScript Build Tools and projects below. Use the toggles on the left to filter open source JavaScript Build Tools 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.
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  • Veeam Data Platform v13.1 Icon
    Veeam Data Platform v13.1

    Move workloads across hypervisors and clouds with no vendor lock-in. Try VDP free today.

    Try Veeam Data Platform today. Experience the unified platform that's secure by design, portable by default, and proven to recover clean, fast, and anywhere.
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  • 1
    Node-RED

    Node-RED

    Low-code programming for event-driven applications

    Node-RED is a programming tool for wiring together hardware devices, APIs and online services in new and interesting ways. It provides a browser-based editor that makes it easy to wire together flows using the wide range of nodes in the palette that can be deployed to its runtime in a single-click. Node-RED provides a browser-based flow editor that makes it easy to wire together flows using the wide range of nodes in the palette. Flows can be then deployed to the runtime in a single-click. JavaScript functions can be created within the editor using a rich text editor. A built-in library allows you to save useful functions, templates or flows for re-use. The light-weight runtime is built on Node.js, taking full advantage of its event-driven, non-blocking model. This makes it ideal to run at the edge of the network on low-cost hardware such as the Raspberry Pi as well as in the cloud.
    Downloads: 51 This Week
    Last Update:
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  • 2
    Pencil

    Pencil

    The Pencil Project's unique mission is to build a free tool

    Pencil is built for the purpose of providing a free and open-source GUI prototyping tool that people can easily install and use to create mockups in popular desktop platforms. The latest stable version of Pencil is 3.1.0 which contains stability fixes and many new features. More details can befound in the releaste notes. Pencil provides various built-in shapes collection for drawing different types of user interface ranging from desktop to mobile platforms. Starting from 2.0.2, Pencil is shipped with Android and iOS UI stencils pre-installed. This makes it even easier to start protyping apps with a simple installation. Starting from 2.0.2 Pencil has even more shape collections included by default. The list of built-in collections now includes general-purpose shapes, flowchart elements, desktop/web UI shapes, Android and iOS GUI shapes.
    Downloads: 25 This Week
    Last Update:
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  • 3
    V Programming Language

    V Programming Language

    Simple, fast, safe, compiled language for developing software

    Simple language for building maintainable programs. You can learn the entire language by going through the documentation over a weekend, and in most cases, there's only one way to do something. This results in simple, readable, and maintainable code. Despite being simple, V gives a lot of power to the developer and can be used in pretty much every field, including systems programming, webdev, gamedev, GUI, mobile, science, embedded, tooling, etc. V avoids doing unnecessary allocations in the first place by using value types, and string buffers, promoting a simple abstraction-free code style. Most objects (~90-100%) are freed by V's auto-free engine: the compiler inserts necessary free calls automatically during compilation. A remaining small percentage of objects is freed via GC. The developer doesn't need to change anything in their code. "It just works", like in Python, Go, or Java, except there's no heavy GC tracing everything or expensive RC for each object.
    Downloads: 22 This Week
    Last Update:
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  • 4
    Blessed Contrib

    Blessed Contrib

    Build terminal dashboards using ascii/ansi art and javascript

    Blessed Contrib is a JavaScript library for building dashboards and rich applications directly inside terminal windows. It extends the Blessed terminal UI framework with visualization widgets designed for ASCII and ANSI environments. Available components include charts, tables, maps, gauges, trees, markdown views, and other dashboard-oriented displays. A grid layout system helps developers arrange multiple widgets into structured terminal interfaces. Applications can remain fully interactive and work naturally over SSH without requiring a browser or graphical desktop. The library supports Linux, macOS, and Windows and is widely useful for monitoring tools, developer dashboards, and terminal-based administration interfaces.
    Downloads: 10 This Week
    Last Update:
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  • 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.
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  • 5
    Brunch

    Brunch

    Web applications made easy

    Brunch lets you focus on what matters most, solving real problems instead of messing around with the glue. By being opinionated about your build pipeline, Brunch is able to provide a smooth and fast experience, and makes your config files take a drastic cut. It doesn't take much to get around with brunch. 'brunch new' to create a new project. 'brunch build' to build. 'brunch watch' to live-compile. Installation is one-line, once you have node.js. You will find that the typical config of a Brunch application is an order of magnitude simpler, compared to Webpack, Grunt, or Gulp. Besides configs, brunch is also simpler in terms of commands. Grunt / Gulp commands replicate all plugins it loads. Brunch always has three commands: new, build and watch. Build / watch commands may receive optional production flag which will tell Brunch to optimize assets, javascripts and stylesheets.
    Downloads: 10 This Week
    Last Update:
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  • 6
    Summernote

    Summernote

    Super simple WYSIWYG editor

    Simply download and attach your js, css with bootstrap. Customize by Initializing various options and modules. Summernote is licensed under MIT and maintained by the community. Integrate it with any back-end. 3rd parties available in django, rails, angular. Bootstrap uses certain HTML elements and CSS properties which require HTML5 doctype. Summernote uses the Open Source libraries jQuery and Bootstrap, if you are using the Boostrap 3 or 4 versions of Summernote, or just jQuery if you use the Lite version of Summernote. Summernote allows you to customize the toolbar. You can compose a toolbar with pre-shipped buttons. Air-mode give an interface without the Toolbar. To reveal popover Toolbar, select a text where you want to modify. Simply turn on airMode and just focus on text. Styles change according to Bootstraps Theme. The editor uses the Bootswatch Themes based on Bootstrap 3, you can also do the same with Bootstrap 4.
    Downloads: 6 This Week
    Last Update:
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  • 7
    Marked

    Marked

    A markdown parser and compiler. Built for speed

    A low-level markdown compiler for parsing markdown without caching or blocking for long periods of time. Light-weight while implementing all markdown features from the supported flavors & specifications. Available as a command-line interface (CLI) and running in client- or server-side JavaScript projects. The only completely secure system is the one that doesn't exist in the first place. Having said that, we take the security of Marked very seriously. To prevent ReDoS attacks you can run marked on a worker and terminate it when parsing takes longer than usual. Marked can be run in a worker thread on a node server, or a web worker in a browser. Only current and LTS Node.js versions are supported. End-of-life Node.js versions may become incompatible with Marked at any point in time.
    Downloads: 5 This Week
    Last Update:
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  • 8
    AWS SDK for JavaScript

    AWS SDK for JavaScript

    AWS SDK for JavaScript in the browser and Node.js

    Find all the tools, documentation, and sample code you need to develop secure, reliable, and scalable JavaScript applications on the AWS cloud. Read and watch guidance from experts on AWS. See how to get the most from AWS. Find solutions to common challenges. Gain the knowledge to get the most from the AWS cloud. Get started building Node.js applications with the AWS SDK for JavaScript and front-end web and mobile apps with Amplify JavaScript Libraries. Amplify Libraries are built on top of the AWS SDK for JavaScript and provide easy-to-use interfaces for common app use cases such as authentication, storage, API. To create React applications with AWS SDK, you can use AWS Amplify Library which provides React components and CLI support to work with AWS services. The version 3.x of the AWS SDK for JavaScript is generally available. For more information see the Developer Guide or API Reference.
    Downloads: 4 This Week
    Last Update:
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  • 9
    Caramel

    Caramel

    Functional language for building type-safe applications

    Caramel is a functional language for building type-safe, scalable, and maintainable applications. It is built in OCaml and maintained by Abstract Machines. Caramel leverages the OCaml compiler, to provide you with a pragmatic type system and industrial-strength type safety, and the Erlang VM, known for running low-latency, distributed, and fault-tolerant systems used in a wide range of industries. Excellent type inference, so you never need to annotate your code. Supports sources in OCaml (and soon Reason syntax too). Caramel aims to make building type-safe concurrent programs a productive and fun experience. Caramel should let anyone with existing OCaml or Reason experience be up and running without having to relearn the entire language. Caramel strives to integrate with the larger ecosystem of BEAM languages, like Erlang, Elixir, Gleam, Purerl, LFE, and Hamler.
    Downloads: 4 This Week
    Last Update:
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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.
    Start Free
  • 10
    SQUEEZER

    SQUEEZER

    Squeezer framework, build serverless dApps

    Squeezer is a platform that empowers new-entry blockchain developers to build serverless dApps simply as dead. The main usage of the ChainKit is to unify top blockchains interfaces into a single normalized API interface, therefore you can build blockchain dApps easily without digging into blockchain complex infrastructure. Bi-directional on-chain transactions (inbound and outbound). Build dApps connecting to smart contracts using chain kit agnostic connector. Quick intuitive code deployments by using a special mechanism that will deploy smart contracts and dApp services where code changed. Silent deployments, no interruption for the current functionality (really useful on production). One single command to simultaneously deploy all available functions on your project where code changed from the last deployment. Test your code locally on a simulated functions platform for a faster development cycle.
    Downloads: 4 This Week
    Last Update:
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  • 11
    Vue CLI Plugin Electron Builder

    Vue CLI Plugin Electron Builder

    Easily Build Your Vue.js App For Desktop With Electron

    If it works as an SPA, it will work in Electron. Because it extends your regular config, it works with all plugins and customized webpack options. All the functions of VCP Electron Builder are entirely configurable and well documented. VCP Electron Builder provides tools for easy debugging and testing, powered by Spectron. Open a terminal in the directory of your app created with Vue-CLI 3 or 4 (4 is recommended). Then, install and invoke the generator of vue-cli-plugin-electron-builder. Native modules are supported and should work without any configuration, assuming node integration is enabled. If you get errors, you may need to set the native dependency as a webpack external. Preload files allow you to execute JS with Node integration in the context of your Vue App (shared window variable). Read Vue ClI's documentation to learn about using environment variables in your app.
    Downloads: 3 This Week
    Last Update:
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  • 12
    YUI 3

    YUI 3

    A library for building richly interactive web applications

    YUI is a free, open source JavaScript and CSS framework for building richly interactive web applications. YUI is provided under a BSD license and is available on GitHub for forking and contribution. YUI's lightweight core and modular architecture make it scalable, fast, and robust. Built by frontend engineers at Yahoo!, YUI powers the most popular websites in the world. YUI's intuitive and well-documented API takes you from basic DOM handling to building performant and maintainable applications on desktop browsers, mobile devices, and servers. A thriving community, a carefully architected infrastructure, and a comprehensive suite of tools help you code like a pro, from simple web pages to complex web applications. YUI is free for all uses and is developed in the open on GitHub. Core team members can always be found in the forums and the #yui IRC channel on Freenode.
    Downloads: 3 This Week
    Last Update:
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  • 13
    web-extension-starter

    web-extension-starter

    Web Extension starter to build "Write Once Run on Any Browser"

    Web Extension starter to build "Write Once Run on Any Browser" extension. Cross Browser Support (Web-Extensions API). Browser Tailored Manifest generation. Automatic build on code changes. Auto packs browser-specific build files. SASS styling. TypeScript by default. ES6 modules support. React UI Library by default. Smart reload. Used by extensions in production that has over 100,000+ users.
    Downloads: 3 This Week
    Last Update:
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  • 14
    Build Your Own Mint

    Build Your Own Mint

    Build your own personal finance analytics using Plaid

    Build Your Own Mint is a Node.js project for creating a personal finance analytics workflow using Plaid, Google Sheets, and scheduled automation. Plaid retrieves transaction information from linked financial institutions after the user configures their own API credentials. Google Sheets acts as the storage and presentation layer for the imported financial data. A customizable transformation module lets users decide how transactions should map into spreadsheet cells and categories. Account tokens and service credentials are stored through local environment configuration rather than committed to the repository. CircleCI configuration can run updates automatically on a daily schedule, although manual execution is also supported. The project is intended as a customizable personal alternative to hosted financial dashboards rather than a finished consumer application.
    Downloads: 2 This Week
    Last Update:
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  • 15
    EpicReact.Dev

    EpicReact.Dev

    Build a ReactJS App workshop

    EpicReact.Dev is the codebase used in the “Build an Epic React App” workshop, where participants build a complete React application from scratch. The project demonstrates how to structure a modern React app, including data modeling, authentication, routing, testing, and interaction with a backend. It uses a realistic “bookshelf” domain where users can manage lists of books, track reading status, and record notes, which provides a concrete context for learning. The repository includes setup scripts and system requirements checks for Git, Node, and npm, plus Docker and Codespaces options for people who struggle with local environments. A guided workflow, driven by a node go script and INSTRUCTIONS.md, lets learners move between exercises and extra credit steps while the repository updates the working files for each stage. Extensive tests, using Jest in watch mode, help students verify their solutions and learn how to work with test-driven feedback.
    Downloads: 2 This Week
    Last Update:
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  • 16
    Quasar Framework

    Quasar Framework

    Build high-performance VueJS user interfaces in record time

    Effortlessly build high-performance & high-quality Vue.js 3 user interfaces in record time. Combine the power of Quasar UI with Quasar CLI. One source code for all platforms simultaneously with all the latest and greatest best practices out of the box. Focus only on your app's features and forget about the boilerplate around it. Build high-performance VueJS user interfaces in record time: responsive Single Page Apps, SSR Apps, PWAs, Browser extensions, Hybrid Mobile Apps and Electron Apps. If you want, all using the same codebase! You get a state-of-the-art UI (that follows Material Guidelines) for your websites and apps out of the box. Best support for desktop and mobile browsers (including iOS Safari!) out of the box. Best-in-class support for each build mode (SPA, SSR, PWA, Mobile app, Desktop app & Browser Extension) and the best developer experience through a tight integration with our own CLI.
    Downloads: 2 This Week
    Last Update:
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  • 17
    vConsole

    vConsole

    A lightweight, extendable front-end developer tool for mobile web page

    vConsole is a lightweight, extendable front-end developer tool for mobile web page. A plugin allows you to add a new tab, add one or more tool button(s). You can customize the functions of the tab and buttons. After imported, vConsole should be inited manually. When vConsole is not loaded, logs will be printed to native console. After importing vConsole, logs will be printed to both front-end console and native console. Some useful vConsole properties and methods are available for plugin development. You can destroy an vConsole instance object and remove vConsole panel from document. You can also add a new plugin to vConsole. Duplicate plugin will be ignored. Create an vConsole plugin object, bind plugin events to this object, and add this object to vConsole. While installing and running a plugin, vConsole will trigger some events to allow a plugin customizing it's functions.
    Downloads: 2 This Week
    Last Update:
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  • 18
    LoopBack

    LoopBack

    Build modern applications that require complex integrations

    A highly extensible Node.js and TypeScript framework for building APIs and microservices. A brand new LoopBack core to deliver great extensibility and flexibility written in TypeScript/ES2017. Create powerful APIs easily with a new creation experience for defining REST API's and handling API requests/responses. A new, improved programming model with Dependency Injection and new concepts such as Components, Mixins, Repositories, etc. make this the most extensible version yet. Using OpenAPI-to-GraphQL, create a GraphQL interface for any REST API. Schemas are used to create GraphQL data definitions, and links defined in the OAS are used to create a nested structure, allowing for (deeply) nested queries. GraphQL-incompatible identifiers of your API are sanitized. For example, API parameters or data definitions with unsupported characters (e.g., -, ., ,, :, ;...) are removed.
    Downloads: 1 This Week
    Last Update:
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  • 19
    Onsen UI

    Onsen UI

    Mobile app development framework and SDK

    The most beautiful and efficient way to develop HTML5 hybrid and mobile web apps. Experience streamlined development with zero-time setup, using the technologies you already know and love, Javascript, HTML and CSS. A rich variety of UI components specially designed for mobile apps. Onsen UI provides tabs, side menu, stack navigation and tons of other components such as lists and forms. They all have iOS and Android Material design support, with automatic styling that will change the appearance of the app based on the platform. With Onsen UI you can truly support both Android and iOS with the same source code. Worried that PhoneGap / Cordova apps are slow? Fear not! All animations in Onsen UI have been tuned and optimized to perform well on a wide range of devices. We take great care to ensure that apps made using Onsen UI feel smooth even on lower end devices. Onsen UI is easy to learn while being a powerful tool to create complex mobile apps.
    Downloads: 1 This Week
    Last Update:
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  • 20
    Parcel

    Parcel

    The zero configuration build tool for the web

    Parcel combines a great out-of-the-box development experience with a scalable architecture that can take your project from just getting started to a massive production application. Parcel starts with a great development experience, from starting a new project to iterating and debugging, and shipping to production. No more fiddling with configuration, or spending hours to keep up with best practices – it just works! Parcel supports many languages and file types out of the box, from web technologies like HTML, CSS, and JavaScript, to assets like images, fonts, videos, and more. And when you use a file type that isn't included by default, Parcel will automatically install all of the necessary plugins and dev dependencies for you! Parcel includes a development server out of the box. Just run parcel index.html to get started. When you make a change, Parcel automatically updates your code in the browser, no page reload necessary!
    Downloads: 1 This Week
    Last Update:
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  • 21
    Victory

    Victory

    React components for building interactive data visualizations

    Victory is a set of modular charting components for React and React Native. Victory makes it easy to get started without sacrificing flexibility. Create one of a kind data visualizations with fully customizable styles and behaviors. Victory uses the same API for web and React Native applications for easy cross-platform charting. Victory is used for charting across the web, from publicly-consumed informational graphs to internal tracking and reporting. Victory is an opinionated, but fully overridable, ecosystem of composable React components. Check out the docs to see how you can get started building interactive data visualizations. Fully contained, reusable data visualization elements are responsible for their own styles and behaviors. Extend the Victory experience on Android and iOS platforms with an identical API.
    Downloads: 1 This Week
    Last Update:
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  • 22
    Vulcan

    Vulcan

    A toolkit to quickly build apps with React, GraphQL & Meteor

    Vulcan is a framework that gives you a set of tools for quickly building React & GraphQL-based web applications. It can handle data loading, e-mail notifications, automatic form generation, and much more, out of the box. Vulcan is unique in that it spans the full-stack, from the database to the browser. While there exist many excellent back-end frameworks or backend-as-a-service providers, these all still require you to handle the front-end code yourself, including building a set of components to read, write, and display data. However, being full-stack, Vulcan is able to speed up these repetitive tasks by providing a whole range of helper components that are fine-tuned to the Vulcan back-end, and as a result just work out of the box. In order to make working with Vulcan easier (especially when it comes to updating the core packages), you are also free to follow the more complicated “two-repo” pattern, with the two repositories.
    Downloads: 1 This Week
    Last Update:
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  • 23
    Web Starter Kit

    Web Starter Kit

    Web Starter Kit - a workflow for multi-device websites

    Web Starter Kit is an opinionated boilerplate for web development. Tools for building a great experience across many devices and performance oriented. Helping you to stay productive following the best practices outlined in Google's Web Fundamentals. A solid starting point for both professionals and newcomers to the industry. A responsive boilerplate optimized for the multi-screen web. Powered by Material Design Lite. You're free to use either this or a completely clean-slate via basic.html. Minify and concatenate JavaScript, CSS, HTML and images to help keep your pages lean. JavaScript code linting is done using ESLint - a pluggable linter tool for identifying and reporting on patterns in JavaScript. Web Starter Kit uses ESLint with eslint-config-google, which tries to follow the Google JavaScript style guide. A built-in server for previewing your site locally while you develop and iterate. Reload the browser in real-time anytime an edit is made without the need for an extension.
    Downloads: 1 This Week
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  • 24
    secure-electron-template

    secure-electron-template

    The best way to build Electron apps with security in mind

    A current electron app template with the most popular frameworks, designed and built with security in mind. Once cloned, install the dependencies for the repo by running the following commands (you do not have to run the first command if your command line is already inside the newly cloned repository) Only load secure content (But the developer is responsible for loading secure assets only) Do not enable node.js integration for the remote content. Enable context isolation for the remote content. Handle session permission requests from remote content. Do not disable web security. Define a content security policy. Do not set allowRunningInsecureContent to true. Do not enable experimental features. Do not use enableBlinkFeatures. Do not use allow popups. <webview> verify options and params. Disable or limit navigation. Disable or limit creation of new windows. Do not use openExternal with untrusted content. Disable remote module.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    Compiere ERP + CRM Business Solution
    Compiere ERP+CRM is the leading open source ERP solution for Distribution, Retail, Manufacturing and Service industries. Compiere automates accounting, supply chain, inventory and sales orders. Compiere ERP is distributed under GPL V2 by Compiere, Inc.
    Downloads: 4 This Week
    Last Update:
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