Open Source JavaScript Software - Page 38
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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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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. -
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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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JSNES
A JavaScript NES emulator
JSNES is a JavaScript-based emulator that replicates the functionality of the Nintendo Entertainment System (NES), enabling classic games to run directly in web browsers or Node.js environments. It implements the core components of NES hardware, including the CPU, graphics processing unit, and audio system, to deliver an accurate emulation experience. The project is designed as a library, allowing developers to embed emulation capabilities into web applications or custom interfaces. It includes support for rendering graphics via canvas, handling audio output, and processing input from keyboards or gamepads. The architecture mirrors real hardware systems, making it both an educational tool and a practical emulator. It also supports features such as save states and cheat codes, enhancing usability. Overall, jsnes demonstrates how complex hardware systems can be recreated in software using modern web technologies. -
Build Agents and Models on One PlatformGemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
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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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KeeWeb
Free cross-platform password manager compatible with KeePass
Free cross-platform password manager compatible with KeePass. Desktop apps look beautiful on each platform: macOS, Windows and Linux. You can open local files in Desktop apps. Web-version has almost all the features available in desktop apps. It doesn't require any installation and works in all modern browsers. Launch the web app. Switch between dark and light themes, whichever you like more. Mark items with color and easily find them using the Colors tab. Open several files, search any entry or view all items from all files as one list. Search works for all files, everything is done from one search box. Open files from Dropbox, Google Drive, OneDrive, or your own server, sync changes across devices automatically. Add tags to arrange entries. Quickly select them in the list or add new ones. Drop entry attachments and database files right to the app. Fields can be hidden when you need them. Also, they will be stored in memory in a more secure way than usual fields. -
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Koa Proxies
A koa@2.x+ proxy middleware
Koa@2.x/next middleware for HTTP proxy -
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Koa-OAI-Router
Koa Router, based on OpenAPI, Swagger and Json Schema
I have used Markdown and wiki to manage API doc, from which I have suffered a lot. It wastes too much time and is very boring. The document should be repaired when you change the API. It's very inconvenient to test and debug. The management of API doc totally depends on people. As a result, it is hard to make documents have high quality. Meanwhile, the developers will spend more time on testing, which may have a bad effect on the project. -
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Konsta UI
Mobile UI components made with Tailwind CSS
Pixel perfect mobile UI components built with Tailwind CSS. With iOS and Material Design components for React, Vue & Svelte. All Konsta UI components come with pixel-perfect native-like iOS and Material Design themes created using official design guidelines. Everything you need for your iOS and Android apps! Konsta UI is mostly designed to be used with "parent" frameworks like Ionic or Framework7. In this case, you use the "parent" framework as your app shell (routing, navigation, state management, native APIs, etc.) and Konsta UI components for inner pages/views UIs. Using it with frameworks like Capacitor and Cordova you can easily create real native apps with native look and feel. -
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LLM React App Javascript Template
The Javascript template for an LLM react node app
This template is an example project for a simple Large Language Model (LLM) application built on top of React and Node. This template was built on top of the React template app from nano-react-app and updated with a Node server that uses HuggingFace.js and LangChain.js to connect to supported large language models. Use this template to easily build and run an LLM app. -
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LaTeX.CSS
LaTeX.css is a library that makes your website look like a LaTeX doc
This almost class-less CSS library turns your HTML document into a website that looks like a LATEX document. Write semantic HTML, and you are good to go. The source code can be found on GitHub. LaTeX.css is a minimal, almost class-less CSS library that makes any website look like a LaTeX document. Add any optional classes to elements with special styles (author subtitle, abstract, lemmas, theorems, etc.). The labels of theorems, definitions, lemmas and proofs can be changed to other supported languages by including the snippet provided in addition to the main CSS file. Sidenotes can be used as an alternative to footnotes, where the user does not have to jump to the bottom of the page to read it. On mobile, click the superscript to reveal the note. Add a class of left to the span with the sidenote class to make the note appear on the left side of the page on instead of right. -
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Laravel Auth
Laravel with user authentication, registration with email confirmation
Laravel 10 with user authentication, registration with email confirmation, social media authentication, password recovery, and captcha protection. Uses offical [Bootstrap 4]. This also makes full use of Controllers for the routes, templates for the views, and makes use of middleware for routing. 5 Minutes Stand-up time. Laravel 10 with user authentication, registration with email confirmation, social media authentication, password recovery, and captcha protection. Uses official Bootstrap 4. This also makes full use of Controllers for the routes, templates for the views, and makes use of middleware for routing. Project can be stood up in minutes. Laracasts offers thousands of video tutorials on Laravel, PHP, and JavaScript development. Check them out, see for yourself, and massively level up your development skills in the process. -
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Lass
Lass scaffolds a modern package boilerplate for Node.js
Lass is a modern scaffolding tool that generates boilerplate for JavaScript projects, including Node.js libraries, web applications, and CLI tools. It follows best practices and helps developers quickly set up projects with a well-structured environment. -
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LemonadeJS
LemonadeJS is a 7KB reactive JavaScript micro-library
LemonadeJS is an ultra-lightweight, reactive JavaScript micro-library that makes building dynamic user interfaces simple and intuitive by providing two-way data binding and component reactivity without any external dependencies or build steps. At roughly 5–7 KB, it works directly in the browser or with bundlers like webpack, enabling developers to create reusable, reactive UI components using pure JavaScript, JSX, or TypeScript while avoiding heavy frameworks. Its core reactivity system tracks changes to component state and efficiently updates only the affected parts of the DOM, which improves performance for both small widgets and larger applications. The library also offers powerful template syntax and lifecycle hooks so you can manage state, effects, loops, and events in a clear and expressive way while keeping your code close to native JavaScript. -
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LittleJS
The Tiny JavaScript Game Engine That Can!
LittleJS is a super lightweight 2D JavaScript game engine with fast WebGL rendering. It is designed to be small, simple, and easy to use for various applications, from game jams to commercial releases. This engine has everything necessary to make high-quality games, including fast rendering, physics, particles, sound effects, music, keyboard/mouse/gamepad input handling, update/render loop, and debug tools. It is recommended that you start by copying the LittleJS Starter Project This file is mostly empty with just a few things you can use to get started or remove. You can also download and include engine.all.js or engine.all.min.js. In order to load files like images you will need to run a small web server like http-server on npm. I recommend an editor that does this for me automatically like Brackets or VS Code with the Live Server plugin. -
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MJML 4
The only framework that makes responsive-email easy
MJML is a markup language created by Mailjet and designed to reduce the pain of coding a responsive email. Its semantic syntax makes the language easy and straightforward while its rich standard components library shortens your development time and lightens your email codebase. MJML’s open-source engine takes care of translating the MJML you wrote into responsive HTML. -
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MSON
Generate an app from JSON
The MSON compiler allows you to generate apps from JSON. The ultimate goal of MSON is to allow anyone to develop software visually, but you can also use pieces of MSON to turbo charge your development. MSON is a subset of JSON and comprised of just a few building blocks, yet it is as powerful as its non-declarative counterparts. MSON supports validation, inheritance, composition, pub/sub, access control, templating and various other features. MSON is particularly useful in software that generates other software, e.g. a form builder. This is because MSON is just JSON, so it is easy to consume, modify and store. MSON is framework agnostic, but the default mson-react rendering layer uses React and Material-UI to generate a UI. The rendering layer is pluggable and can be written to support any framework and UI library. The MSON library can also be used without any UI dependecies, which makes it great for things like data validation in both the front and back ends. -
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Marionette.js
The backbone framework
Marionette simplifies your Backbone application code with robust views and architecture solutions. Organize your app in terms of small Views. Marionette makes it easy to compose rich layouts out of small components. Show a sorted filtered list without breaking a sweat. Have a massive collection? Want to add or remove an item? No worries! Learn to love the details. We've added tons of features from templateHelpers, to a declarative UI hash, that will keep you from ever wanting to go back. Share complex UI interactions across views. Behaviors are like mixins, without all of the pain associated with property collision. Decoupled communication between your application components with a powerful messaging system. Write classes with the same API as your views. Marionette Objects support features like extend, events, initialize, and more. -
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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. -
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Metro 4
Impressive component library for expressive web development
Create your site quickly and effectively with Metro 4. Metro 4 is a free open-source impressive components library built on html, css, javascript. Using Metro 4 is very easy, you don't even need to know javascript to make fully functional websites that interact with the user. Metro 4 is an open source project. You can access to full source code on the GitHub and get Metro 4 with free license. Metro 4 is accessible in various ways. You can get Metro 4 from NPM, Nuget, GitHub, and GitLab. Metro 4 is an open source toolkit for developing with HTML, CSS, and JS. Quickly prototype your ideas or build your entire app with responsive grid system, extensive prebuilt components, and powerful plugins. Metro 4 developed to build websites in Windows Metro Style and include general styles, grid, layouts, typography, 100+ components and routines, 500+ built-in icons. -
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MindsDB
Making Enterprise Data Intelligent and Responsive for AI
MindsDB is an AI data solution that enables humans, AI, agents, and applications to query data in natural language and SQL, and get highly accurate answers across disparate data sources and types. MindsDB connects to diverse data sources and applications, and unifies petabyte-scale structured and unstructured data. Powered by an industry-first cognitive engine that can operate anywhere (on-prem, VPC, serverless), it empowers both humans and AI with highly informed decision-making capabilities. A federated query engine that tidies up your data-sprawl chaos while meticulously answering every single question you throw at it. MindsDB has an MCP server built in that enables your MCP applications to connect, unify and respond to questions over large-scale federated data—spanning databases, data warehouses, and SaaS applications. -
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Moment.js
Parse, validate, manipulate, and display dates in javascript
Moment is a JavaScript date and time library that simplifies parsing, formatting, arithmetic, and humanizing of dates. It supports many formats in input and output, internationalization (i18n), locale-based month/day names, relative time (for example, “3 days ago”), and chaining of operations (adding, subtracting, diffing). Developers often use it for calendar displays, scheduling, and manipulating times across time zones or daylight saving transitions. While it makes working with date strings convenient, moment maintains internal mutability, which has trade-offs with safety and chainability. Over time, newer alternatives with immutable and modular designs have emerged, but moment remains widely known and integrated in many legacy projects. Its comprehensive feature set and ease of use made it a standard for date-time handling in JavaScript for many years. -
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NOTY
NOTY is a dependency-free notification library
NOTY is a notification library that makes it easy to create alert - success - error - warning - information - confirmation messages as an alternative the standard alert dialog. There are lots of other options in the API to customize the text, animation, buttons, and much more. It also has various callbacks for the buttons, opening closing the notifications, and queue control. Dependency-free notification library that makes it easy to create alert - success - error - warning - information - confirmation messages as an alternative to the standard alert dialog. -
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NPS (Node Package Scripts)
All the benefits of npm scripts without the cost of a bloated package
NPS (Node Package Scripts) is an advanced alternative to NPM scripts that improves maintainability by allowing JavaScript-based task definitions. It removes the need for complex package.json script structures, enabling developers to create modular and readable task automation workflows.
