Open Source JavaScript Software - Page 64
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JavaScript Software
Browse free open source JavaScript Software and projects below. Use the toggles on the left to filter open source JavaScript Software by OS, license, language, programming language, and project status.
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MongoDB Atlas runs apps anywhereMongoDB 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.
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Highlight.js
JavaScript syntax highlighter with language auto-detection
Highlight.js is a syntax highlighter written in JavaScript. It works in the browser as well as on the server. It can work with pretty much any markup, doesn’t depend on any other frameworks, and has automatic language detection. Highlight.js supports over 180 languages in the core library. There are also 3rd party language definitions available to support even more languages. We strongly recommend <pre><code> wrapping for code blocks. It's quite semantic and "just works" out of the box with zero fiddling. It is possible to use other HTML elements (or combos), but you may need to pay special attention to preserving linebreaks. You can run highlighting inside a web worker to avoid freezing the browser window while dealing with very big chunks of code. -
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Highway
Highway - A Modern Javascript Transitions Manager
Highway is a lightweight (2.5ko gzipped), easy-to-use, flexible, and modern library to create AJAX navigations with animations on websites. Don't bother about all the processes behind the scenes and focus on creative animations. -
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Hyperapp
Tiny framework for building hypertext applications
The tiny framework for building hypertext applications. Do more with less—We have minimized the concepts you need to learn to get stuff done. Views, actions, effects, and subscriptions are all pretty easy to get to grips with and work together seamlessly. Write what, not how—With a declarative API that's easy to read and fun to write, Hyperapp is the best way to build purely functional, feature-rich, browser-based apps in JavaScript. Smaller than a favicon—1 kB, give or take. Hyperapp is an ultra-lightweight Virtual DOM, highly-optimized diff algorithm, and state management library obsessed with minimalism. Official packages provide access to The Web Platform, and ensure that the APIs are exposed in a way that makes sense for Hyperapp, and the underlying code is stable. We already cover a decent amount of features, but you can always create your own effects and subscriptions if something is not available yet. -
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Hypermind
The high-availability solution to a problem that doesn't exist
Hypermind is a whimsical yet technically intriguing decentralized application that combines a peer-to-peer (P2P) network counter with ephemeral chat functionality, built to “solve” the meta-problem of tracking how many peers are running its container in a decentralized mesh. There’s no central server or database; instead, Hypermind leverages a Distributed Hash Table (DHT) using Hyperswarm to discover peers and maintain approximate counts of active nodes, architected to be a fully decentralized service. Alongside counting nodes, the project also supports ephemeral chat over its mesh network, allowing users to send messages directly to local peers or broadcast via a gossip protocol without storing chat history. The project uses probabilistic data structures like HyperLogLog for efficient estimation of unique peers and provides real-time visualizations and themes for exploring the swarm. -
Gemini 3 and 200+ AI Models on One PlatformBuild generative AI apps with Vertex AI. Switch between models without switching platforms.
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I Still Don't Care About Cookies
Debloated fork of the extension "I don't care about cookies"
Debloated fork of the extension "I don't care about cookies". Get rid of cookie warnings from almost all websites! This extension has been acquired by Avast and simply I don't trust Avast with my data. Also having it on Github allows us to improve the code & add support for websites faster. The EU regulations require that any website using tracking cookies must get user's permission before installing them. These warnings appear on most websites until the visitor agrees with the website's terms and conditions. Imagine how irritating that becomes when you surf anonymously or if you delete cookies automatically every time you close the browser. This add-on will remove these cookie warnings from almost all websites! You can report any website which still warns you about cookies: just click 'Report a cookie warning' from the extension menu (the brown cookie image next to your address bar). -
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ICARUS
A simple and modern theme for the static site generator Hexo
Icarus is a simple, delicate, and modern theme for the static site generator Hexo. It strives to be elegant in design while simple and straightforward to use. Its versatile and flexible configuration system enables power users lay out their sites to the finest details. Icarus also offers a wide range of plugins and widgets to meet your various customization and optimization needs. Moreover, its refreshed implementation enables better IDE support and third-party integration, which open to a sea of improvement possibilities. Icarus includes plentiful search, comment, sharing and other plugins out of the box that makes your blog feature-rich and powerful. Icarus directly import stylesheets from the highlight.js package and makes more than 90 code highlight themes available to you. -
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IPLD Explorer Components
React components for ipfs-webui
React components for ipfs-webui. This module was extracted from explore.ipld.io so it could be reused from the IPFS Web UI. This module is not intended to be re-used in it's current form by other projects. There is more work to do to make this a nice set of generic components. The ES5-friendly version of the src dir is generated to the dist dir and the page components are all provided as named exports so you can import them. There are peer dependencies so that the parent app can pick the versions of common deps. You'll need to add relevant deps to your project. These components use redux-bundler and your app will need to use a redux-bundler provider in order to propagate the properties and selectors. You can find a basic example of this in ./dev/devPage.jsx. -
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IVRE
Open source framework for large scale network reconnaissance and analy
IVRE is an open source network reconnaissance framework designed to collect, process, and analyze intelligence gathered from network scans and traffic data. It provides tools for both active and passive reconnaissance, enabling users to understand how networks behave and identify exposed services or infrastructure. The framework integrates with well known security and scanning tools such as Nmap, Masscan, ZGrab2, ZDNS, and Zeek to gather large amounts of network intelligence. IVRE stores the collected data in a database and offers multiple ways to explore and analyze it, including a web interface, command line tools, and a Python API. This allows security professionals to query scan results, inspect network flows, and identify patterns across large datasets. The project can be used to build self hosted alternatives to internet scanning services such as Shodan or Censys, giving organizations full control over their own reconnaissance infrastructure. -
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Ignite UI for jQuery
Ignite UI for jQuery by Infragistics
Ignite UI for jQuery™ helps you build powerful, high-performance web-based applications. Inside Ignite UI for jQuery you'll find user experience controls and components for creating engaging line-of-business web applications that target the browsers for both mobile & desktop environments. Ignite UI for jQuery is built on jQuery and jQuery UI and ties in seamlessly with the jQuery core model and conventions including all styling support via jQuery UI Theme Roller. Beyond jQuery Ignite UI for jQuery features support for Bootstrap themes, AngularJS, Knockout, and jQuery Mobile. -
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Ikonate
Fully customisable & accessible vector icons
Ikonate are fully customizable & accessible*, well-optimized vector icons. To learn more about the project and generate the icons online, visit Ikonate. Customized SVG icons as stand-alone files (perfect for designers who don't want to edit code) Customised SVG sprite with an html demo. Customized html demo of the icons as inline SVG. To customise icons with CSS you need to use the icons as either inline SVG or SVG sprite. Ikonate is NOT accessible out of the box and will never be. We've done our best to follow the best accessibility practices while building this software, but it's your role to adjust it and make it truly accessible inside your project. E.g. all the titles and descriptions given to the icons should be treated as placeholders and changed in implementation depending on an actual role of each icon. In many cases, you may not need them altogether. -
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Inquirer.js
A collection of common interactive command line user interfaces
Inquirer.js strives to be an easily embeddable and beautiful command line interface for Node.js (and perhaps the "CLI Xanadu"). Inquirer.js should ease the process of providing error feedback, asking questions, parsing input, validating answers, and managing hierarchical prompts. Inquirer.js provides the user interface and the inquiry session flow. If you're searching for a full blown command line program utility, then check out commander, vorpal or args. Create a self contained inquirer module. If you don't want to affect other libraries that also rely on inquirer when you overwrite or add new prompt types. Internally, Inquirer uses the JS reactive extension to handle events and async flows. This mean you can take advantage of this feature to provide more advanced flows. For example, you can dynamically add questions to be asked. -
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Intro.js
Lightweight library for creating step-by-step customer onboarding
Intro.js is a lightweight library for creating step-by-step customer onboarding. You can install Intro.js in a few simple steps. Intro.js consists of two main files, the JavaScript part and the CSS part which renders the elements nicely. The simplicity of Intro.js API will help you to develop an advanced onboarding for your products. Intro.js is lightweight, 10kB and has no external dependencies! Intro.js provides various ways to configure your product onboarding and customize every single step of your tour. Intro.js is Free and open-source, published under AGPL license. We also provide commercial license, supporting your team to successfully integrate Intro.js! Intro.js is AGPL-licensed and open-source. However, if you want to use Intro.js in your commercial app, website or plugin, you would need to obtain a commercial license. -
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Isotope
Filter and sort layouts
Include the Isotope .js file in your site. Isotope works on a container element with a group of similar child items. All sizing of items is handled by your CSS. You can use Isotope as a jQuery plugin. You can use Isotope with vanilla JS. You can initialize Isotope in HTML, without writing any JavaScript. All options are optional, but itemSelector is recommended. Layout modes have their own separate options. We recommend always setting itemSelector. itemSelector is useful to exclude sizing elements or other elements that are not part of the layout. If you want to use Isotope to develop commercial sites, themes, projects, and applications, the Commercial license is the appropriate license. With this option, your source code is kept proprietary. If you are creating an open source application under a license compatible with the GNU GPL license v3, you may use Isotope under the terms of the GPLv3. -
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JEK
Minimalist jekyll theme putting the power of color schemes in the user
Jek is a minimalist Jekyll theme putting the power of color schemes in the user’s hands. Toggle between schemes hassle-free, create new ones on the go, and store settings in the browser. These settings are saved in the session and local storage. Toggling light/dark mode or choosing a random palette saves settings for only the current session. Clicking the save button adds the theme to local storage for future visits. -
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JEKYLL YAT THEME
Yet another theme for elegant writers with modern flat style
Yet another theme for elegant writers with a modern flat style and beautiful night/dark mode. Here the YAT (Yet Another Theme) is a modern responsive theme. It's quite clear, clean, and neat for writers and posts. If you are an elegant writer and focus on content, don't miss it. -
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JSONPath Plus
A fork of JSONPath
Analyse, transform, and selectively extract data from JSON documents (and JavaScript objects). JSON path-plus expands on the original specification to add some additional operators and makes explicit some behaviors the original did not spell out. Try the browser demo or Runkit (Node). -
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JavaScript Primer
JavaScript Primer
JavaScript Primer is an open-source book designed to provide a comprehensive introduction to JavaScript, covering fundamental concepts and best practices. -
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JerryScript
Ultra-lightweight JavaScript engine for the Internet of Things
JerryScript is a lightweight JavaScript engine for resource-constrained devices such as microcontrollers. It can run on devices with less than 64 KB of RAM and less than 200 KB of flash memory. -
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Join Monster
A GraphQL to SQL query execution layer for query planning
A GraphQL to SQL query execution layer for query planning and batch data fetching. Efficient query planning and data fetching for SQL. Use JOINs and/or batched requests to retrieve all your data. It takes a GraphQL query and your schema and automatically generates the SQL. Send that SQL to your database and get back all the data needed to resolve with only one or a few round-trips to the database. Since it works with the reference implementation, the API is all very familiar. Join Monster is a tool built on top to add batch data fetching. You add some special properties along-side the schema definition that Join Monster knows to look for. The use of graphql-js does not change. You still define your types the same way. You can write resolve functions to manipulate the data from Join Monster, or incorporate data from elsewhere without breaking out of your "join-monsterized" schema. -
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Journiv
Self hosted private journaling app
Journiv is a modern self-hosted private journaling platform that puts privacy and ownership at the forefront of personal reflection and mood tracking. Built as a complete journaling solution, Journiv includes prompt-based entries, mood logs, advanced search, media uploads, and intuitive analytics that let you explore patterns over time without relying on external cloud services. Because it runs on your own infrastructure (e.g., via Docker), all of your entries, moods, and memories stay under your direct control, making it a strong alternative to commercial journaling apps that collect data. The app is currently in beta and sees active development with improvements such as draft support, Markdown editing, and multimedia integration. It combines a clean, distraction-free interface with rich features like tagging, calendar views, and customizable journals, appealing to users who want both useful tools and full data sovereignty in their self-hosted ecosystems. -
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Judge0 IDE
Simple, free and open-source online code editor
Judge0 IDE is a free and open-source online code editor that allows you to write and execute code from a rich set of languages. It's perfect for anybody who just wants to quickly write and run some code without opening a full-featured IDE on their computer. Moreover, it is also useful for teaching and learning or just trying out a new language. -
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KeystoneJS
Node.js CMS and web app framework
KeystoneJS is an open source framework for developing database-driven websites, applications and APIs in Node.js. Built on Express and MongoDB. Keystone will configure express - the de facto web server for node.js - for you and connect to your MongoDB database using Mongoose, the leading ODM package. Keystone starts with best practices for setting up your MV* application, and makes it easy to manage your templates, views and routes. IDs, Strings, Booleans, Dates and Numbers are the building blocks of your database. Keystone builds on these with useful, real-world field types like name, email, password, address, image and relationship fields (and more). Whether you use it while you're building out your application, or in production as a database content management system, Keystone's Admin UI will save you time and make managing your data easy. Sometimes, async code can get complicated to do simple things. -
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Klavis AI
MCP integration platforms for AI agents to use tools at any scale
Klavis AI is a Y Combinator X25-backed open-source infrastructure platform that enables AI agents to reliably connect with external tools and services at scale through Model Context Protocol (MCP). Founded by ex-Google DeepMind and ex-Lyft engineers, Klavis provides 50+ production-ready MCP servers with enterprise OAuth support for GitHub, Slack, Gmail, Salesforce, Linear, Notion, and more. The flagship product Strata solves tool overload through progressive discovery, achieving +13% higher accuracy and 83%+ success on complex workflows. Developers can integrate via Python/TypeScript SDKs or REST API, with support for OpenAI, Claude, Gemini, LangChain, LlamaIndex, and CrewAI. Features include built-in authentication, multi-tenancy, hosted servers, Docker support, and enterprise security guardrails. Licensed under Apache 2.0, Klavis simplifies AI development by eliminating complex authentication management and enabling seamless workflow automation across multiple applications. -
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Knockout
Tool to create rich, responsive UIs with JavaScript
Easily associate DOM elements with model data using a concise, readable syntax. When your data model's state changes, your UI updates automatically. Implicitly set up chains of relationships between model data, to transform and combine it. Quickly generate sophisticated, nested UIs as a function of your model data. Get started with knockout.js quickly, learning to build single-page applications, custom bindings and more with interactive tutorials. Knockout is a JavaScript MVVM (a modern variant of MVC) library that makes it easier to create rich, desktop-like user interfaces with JavaScript and HTML. It uses observers to make your UI automatically stay in sync with an underlying data model, along with a powerful and extensible set of declarative bindings to enable productive development. For Node.js developers, Knockout is also available from npm. -
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Koa
Expressive middleware for node.js using ES2017 async functions
Koa is a minimal, expressive web framework for Node.js created by the team behind Express, built around modern JavaScript features. Its middleware system uses async functions and an “onion” execution model, producing clean, sequential control flow for request/response handling. Koa keeps the core small and unopinionated—there’s no built-in router or templating—so developers compose only the pieces they need. The framework exposes a refined Context object to standardize request and response utilities without obscuring Node’s primitives. This design encourages readable middleware, robust error handling, and straightforward composition for tasks like authentication, logging, and body parsing. In production, Koa’s simplicity and async-first approach translate to predictable performance and maintainable server code.
