Open Source JavaScript Software - Page 43
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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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Hexo
A fast, simple & powerful blog framework, powered by Node.js
Hexo is a blazing fast and yet simple blog framework powered by Node.js. It supports all features of GitHub Flavored Markdown, as well as most Octopress plugins. Hexo is quite powerful, able to build hundreds of files in a matter of seconds, and equipped with amazing APIs for unlimited extensibility. It offers hundreds of themes and plugins for you to choose from and achieve exactly what you want, and takes just one command to deploy to GitHub Pages, Heroku or other platforms. -
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IPFS Web UI
A frontend for an IPFS node
A web interface to IPFS, shipped with Kubo, and ipfs-desktop. Check on your node stats, explore the IPLD powered merkle forest, see peers around the world and manage your files, without needing to touch the CLI. When working on the code, run an ipfs daemon, the local dev server, the unit tests, and the storybook component viewer and see the results of your changes as you save files. If you need to run IPFS in a Docker container, you can still have Web UI available by exposing both the Gateway and Web UI ports. The end-to-end tests (E2E) test the full app in a headless Chromium browser. They spawn real IPFS node for HTTP API and a static HTTP server to serve the app. The purpose of those tests is not being comprehensible, but act as a quick regression and integration suite. -
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Improve YouTube!
Extension to improve your view, playback & content discovery
ImprovedTube is a lightweight extension to improve your view, playback & content discovery. Powerful features with a pretty UI. It is an extension we built to refine and sweeten your YouTube experience. A one-stop shop with many powerful features to enhance YouTube, yet lightweight. A larger player & tidy YouTube UI / hiding distractions were the first loved feature. And there was so much left to build and are many clever features to come still. ImprovedTube is designed with our own UI library: Status (to manage your settings efficiently & create familiar apps/'cousins easily.) Please spread the word: ImprovedTube is the only project of it's kind because other open Youtube Extensions resigned. No other project provides so much CSS to adjust a website. -
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Ionic
Build amazing Native and Progressive Web Apps with web technologies
Ionic is an open source mobile app development framework based on Web components that makes it easy to build fast, top quality native and progressive web apps. It uses web technologies that significantly improve design, performance and usability. -
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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JHipster
Development platform to generate and deploy modern web apps
JHipster is a development platform to quickly generate, develop, and deploy modern web applications and microservice architectures. We support many frontend technologies, including Angular, React, and Vue. We even have mobile app support for Ionic and React Native! On the backend, we support Spring Boot (with Java or Kotlin), Micronaut, Quarkus, Node.js, and .NET. For deployment, we embrace cloud native principles with Docker and Kubernetes. Deployment support exists for AWS, Azure, Cloud Foundry, Google Cloud Platform, Heroku, and OpenShift. Our goal is to generate a complete and modern web app or microservice architecture, unifying: A high-performance and robust server-side stack with excellent test coverage; a sleek, modern, mobile-first UI with Angular, React, or Vue + Bootstrap for CSS; and a powerful workflow to build your application with Webpack and Maven or Gradle. -
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JSHint
A tool that helps to detect errors and in your JavaScript code
JSHint is a community-driven tool that detects errors and potential problems in JavaScript code. Since JSHint is so flexible, you can easily adjust it in the environment you expect your code to execute. JSHint is publicly available and will always stay this way. The project aims to help JavaScript developers write complex programs without worrying about typos and language gotchas. Any code base eventually becomes huge at some point, so simple mistakes, that would not show themselves when written, can become show stoppers and add extra hours of debugging. So, static code analysis tools come into play and help developers spot such problems. JSHint scans a program written in JavaScript and reports about commonly made mistakes and potential bugs. The potential problem could be a syntax error, a bug due to an implicit type conversion, a leaking variable, or something else entirely. -
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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. -
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JSONPlaceholder
A simple online fake REST API server
JSONPlaceholder is a free, fake online REST API designed for prototyping, tutorials, and UI demos without standing up a real backend. It provides predictable endpoints for resources like posts, comments, albums, photos, todos, and users with realistic data shapes. Because the data is publicly available and stable, you can build fetch logic, paginate, and render lists while focusing on front-end patterns rather than server plumbing. The API accepts typical HTTP verbs and returns JSON in a consistent format, making it easy to swap with a real server later. It’s widely used in examples, workshops, and automated tests where a dependable dummy service accelerates iteration. With zero setup, it removes a major friction point for learning HTTP clients and front-end data flows. -
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Jaeger UI
Web UI for Jaeger
Visualize distributed tracing with Jaeger. Distributed tracing observability platforms, such as Jaeger, are essential for modern software applications that are architected as microservices. Jaeger maps the flow of requests and data as they traverse a distributed system. These requests may make calls to multiple services, which may introduce their own delays or errors. Jaeger connects the dots between these disparate components, helping to identify performance bottlenecks, troubleshoot errors, and improve overall application reliability. Jaeger is 100% open source, cloud native, and infinitely scalable. -
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JavaScript Algo and Data Structures
Algorithms and data structures implemented in JavaScript
javascript-algorithms is an open source repository by Oleksii Trekhleb that provides implementations of algorithms and data structures in JavaScript. Each algorithm includes explanations, complexity analysis, and references for further reading, making it both a coding resource and a study guide. The repository covers topics such as sorting, searching, graph algorithms, cryptography, and data structures like linked lists, stacks, and queues. It is designed to help developers understand algorithm fundamentals and practice problem-solving with JavaScript. Multilingual README files make the resource accessible to a global audience. With strong community engagement, it is one of the most popular algorithm repositories on GitHub. -
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Jekyll Atlantic
Jekyll + Tailwind Starter Theme. A beautiful blog theme for Jekyll
Atlantic is a beautiful minimal blog theme for Jekyll. It is an excellent Jekyll + Tailwind boilerplate to start from. -
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Jimp
An image processing library written entirely in JavaScript for Node
An image processing library for Node written entirely in JavaScript, with zero native dependencies. If you're using this library with TypeScript the method of importing slightly differs from JavaScript. Instead of using require, you must import it with ES6 default import scheme. If you're using a web bundles (webpack, rollup, parcel) you can benefit from using the module build of jimp. Using the module build will allow your bundler to understand your code better and exclude things you aren't using. If you're using webpack you can set process.browser to true and your build of jimp will exclude certain parts, making it load faster. The static Jimp.read method takes the path to a file, URL, dimensions, a Jimp instance or a buffer and returns a Promise. In some cases, you need to pass additional parameters with an image's URL. -
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JsStore
A complete IndexedDB wrapper with SQL like syntax
Execute Database operation in browsers with JsStore. JsStore is an indexedDB wrapper. It makes IndexedDB super easy with its SQL-like APIs. Harness the power of JsStore to streamline database operations in your web applications. With its SQL-like API, JsStore simplifies IndexedDB interactions, enabling developers to easily query, filter, and manipulate data with familiar syntax and efficiency. -
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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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Keras.js
Run Keras models in the browser, with GPU support using WebGL
Run Keras models in the browser, with GPU support provided by WebGL 2. Models can be run in Node.js as well, but only in CPU mode. Because Keras abstracts away a number of frameworks as backends, the models can be trained in any backend, including TensorFlow, CNTK, etc. Check out the demos/ directory for real examples running Keras.js in VueJS. Library version compatibility, Keras 2.1.2. -
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Kitematic
Visual Docker Container Management on Mac & Windows
Kitematic is a simple yet powerful application for managing Docker containers on Mac and Windows. It has a new Docker Desktop Dashboard for an even better user experience, with Docker Hub integration and plenty of advanced features. -
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Kube Forwarder
Easy to use Kubernetes port forwarding manager
Kube Forwarder watches for connection status and always tries reconnect on failure. Bookmark and forward Kubernetes services from multiple clusters easily like never before. Use import and export functionality to share bookmarked services with your team or simply backup it. Use port-forwarding without installing kubectl and avoid explanations to developers on how to use it. You don't need expose services to the global network, install extra Auth reverse proxy services or use a VPN. Using reverse proxy does not work with all services and requires extra configuration from developers, when port forwarding works with almost any services out of the box. Connect to any pod with port-forwarding in the cluster and investigate the problem, without exposing your service globally. Import of the JSON file that could be generated via Kube Forwarder export functionality. -
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LIEF
LIEF - Library to Instrument Executable Formats (C++, Python, Rust)
LIEF (Library to Instrument Executable Formats) is a cross-platform library that enables parsing, modifying, and abstracting executable formats such as ELF, PE, and Mach-O. It's widely used in reverse engineering and binary analysis. -
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Lepton
A lean snippet manager
Lepton is a beautiful open source snippet manager for ubuntu. Manage your Github gists with support for tags, search and sharing. Lepton features a rich-text editor and markdown viewer. Try the snap today! Lepton's can be customized by <home_dir>/.leptonrc! Theme (light/dark), Snippet, Editor, Logger, Proxy, Shortcuts, Enterprise, Notifications, and more! Check out the configuration docs to explore different customization options. Lepton is an open source project on GitHub. It's free and we don't accept donations. If you like, feel free to donate to Wikimedia Foundation, which helps sustain free knowledge through Wikipedia and its sister projects for people around the world. Lepton replies on GitHub APIs to detect the language. Build apps for macOS, Windows and Linux. -
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Libki Server
Libki Server for managing computer access for public users
Libki is an open-source, cross-platform system that allows organizations to manage computer access for public users. It's designed for use in places that require a controlled computing environment, such as libraries, schools, and public access systems. Libki consists of two parts: the Libki server and the Libki client. The server is web-based and allows for customization of the user experience. -
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Lightbox2
The original Lightbox script (v2)
Lightbox is small javascript library used to overlay images on top of the current page. It's a snap to setup and works on all modern browsers. Lightbox2 has been tested successfully in the following browsers, Internet Explorer, Chrome, Safari, Firefox, iOS Safari, iOS Chrome, Android Browser, and Android Chrome. The lightbox-plus-jquery.js file includes jQuery v2.x and supports IE 9+. If you want to support IE 6, 7, and 8, use your own copy of jQuery v1.x with lightbox.js. Lightbox is free to use in both commercial and non-commercial work. Make sure jQuery, which is required by Lightbox, is also loaded. -
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Lite YouTube Embed
A faster youtube embed
Lite YouTube Embed is a lightweight custom element that replaces the standard YouTube iframe with a much faster placeholder until a user interacts with it. It is built for websites that need embedded YouTube videos without the heavy performance cost of loading the full player immediately. The component visually behaves like a normal YouTube embed, but it delays loading expensive iframe resources until playback is requested. Developers can install it from npm or use the source files directly in a project. It supports progressive enhancement, custom poster images, visible titles, YouTube player parameters, and access to the YouTube Iframe Player API. It is especially useful for performance-focused websites, landing pages, blogs, documentation sites, and media-heavy pages where faster loading improves the user experience. -
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Lumo
Fast, cross-platform, standalone ClojureScript environment
Fast, cross-platform, standalone ClojureScript environment. Lumo is a standalone ClojureScript environment that runs on Node.js and the V8 JavaScript engine. It starts up instantaneously and provides out-of-the-box access to the entire Node.js ecosystem, including a ClojureScript REPL. Lumo also provides a ClojureScript build API, making it possible to compile ClojureScript projects entirely without the JVM, thanks to the experimental JavaScript version of the Google Closure Compiler. Lumo can compile ClojureScript code as of version 1.2.0. See the introductory blog post. It is still considered experimental, given the relatively new Google Closure Compiler port to JavaScript, but it aims to be at feature parity with the JVM ClojureScript compiler. Enter lumo at the command line to launch the ClojureScript REPL. -
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MCP YouTube
A Model-Context Protocol Server for YouTube
The YouTube MCP Server uses yt-dlp to download subtitles from YouTube videos and connects to claude.ai via the Model Context Protocol. It enables AI assistants to summarize YouTube videos by accessing their subtitles. -
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MFS JavaScript Implementation
JavaScript implementation of the IPFS Mutable File System
JavaScript implementation of the IPFS Mutable File System. The code published to npm that gets loaded on requires is an ES5 transpiled version with the right shims added. This means that you can require it and use with your favorite bundler without having to adjust the asset management process. The mfs works by storing a reference to the root node's CID in LevelDB. LevelDB does not support concurrent access so there are read/write locks around bits of the code that modify the the root node's CID. A lock is kept on the main thread and any requests to read/write from workers or the main thread itself are queued pending release of the lock by the existing holder. Reads are executed together, writes are executed sequentially, and prevent any reads from starting. If you are using IPFS in a single process or with the node cluster module this should be completely transparent. If you are using Web Workers there is no way to globally listen to messages sent between workers and the main thread.