Open Source JavaScript Software - Page 85
Sort By:
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.
-
Ship Agents FasterGemini 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.
-
$300 Free Credits for Your Google Cloud ProjectsLaunch your next project with $300 in free Google Cloud credits—no strings attached. Test, build, and deploy without risk. Use your credits across the entire Google Cloud platform to find what works best for your needs. After your credits are used, continue with always-free tier services. Only pay when you're ready to scale. Sign up in minutes and start exploring.
-
1
Hazel
Lightweight update server for Electron apps
This project lets you deploy an update server for Electron apps with ease: You only need to click a button. The result will be faster and more lightweight than any other solution out there! Once it's deployed, paste the deployment address into your code (please keep in mind that updates should only occur in the production version of the app, not while developing). Since Hazel routes all the traffic for downloading the actual application files to GitHub Releases, you can use their API to determine the download count for a certain release. Display an overview page showing the cached repository with the different available platforms and file sizes. Links to the repo, releases, specific cached version and direct downloads for each platform are present. Automatically detects the platform/OS of the visitor by parsing the user agent and then downloads the appropriate copy of your application. -
2
HospitalRun website
HospitalRun website
With Jekyll 3 it was must necessary to switch from GitHub Pages to Netlify. hospitalrun.io is made with Jekyll a simple, blog-aware, static site generator. It takes a template directory containing raw text files in various formats, runs it through a converter (like Markdown) and our Liquid renderer, and spits out a complete, ready-to-publish static website suitable for serving on Netlify. -
3
HumanLayer
Open source IDE for orchestrating AI coding agents in large codebases
HumanLayer is an open source development environment designed to help developers orchestrate and manage AI coding agents working within complex software projects. It provides a framework and tooling that allow AI agents to research, plan, and implement changes in large codebases while maintaining structured workflows. It focuses on enabling AI-assisted development through coordinated agent workflows rather than isolated code generation tasks. HumanLayer integrates with modern AI models and coding assistants to automate tasks such as code research, planning, and implementation while maintaining a structured development process. HumanLayer introduces advanced context management techniques that help AI agents understand large repositories and operate effectively across multiple tasks. It also supports collaborative workflows where developers and AI agents can work together with human oversight and control. -
4
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. -
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.
-
5
Hyprland dotfiles
Modern, feature-rich and accessible desktop configuration
Modern, feature-rich and accessible Hyprland dotfiles. -
6
IPFS Companion
Browser extension that simplifies access to IPFS resources on the web
IPFS Companion allows you to interact with your IPFS node and the extended IPFS network through your browser. The add-on is available for Brave, Chrome, Edge, Firefox, and Opera. It enables support for ipfs addresses, automatically loads websites and file paths from an IPFS gateway, allows you to easily import and share a file with IPFS, and more. IPFS Companion works in tandem with an IPFS node running on your local machine, so make sure you have a node installed before installing this add-on. The easiest way to install IPFS Companion is through your browser's add-on store. Make sure you have IPFS installed (opens new window)on your computer as well. Because IPFS Companion (in its standard configuration) talks to your computer's local IPFS node to work its browser magic, you'll need to have IPFS running on your computer, too. -
7
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. -
8
Impeccable
The design language that makes your AI harness better at design
Impeccable is a design skill system that helps AI coding tools produce better frontend interfaces by giving them a richer design vocabulary. It provides one comprehensive skill, multiple commands, and curated reference files covering typography, color, motion, spacing, interaction, responsive design, and UX writing. The project is built to counter common AI-generated design habits such as generic SaaS layouts, overused fonts, nested cards, weak hierarchy, and predictable gradients. It can be installed across several AI coding environments, including Claude Code, Cursor, Codex, Gemini CLI, GitHub Copilot, and others. Impeccable also includes deterministic anti-pattern detection through a CLI and browser extension without requiring an API key. It is most useful for developers and designers who want AI-generated interfaces to feel more polished, intentional, and product-aware. -
9
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. -
Secure File Transfer for Windows with Cerberus by RedwoodCerberus supports unlimited users and connections on a single IP, with built-in encryption, 2FA, and a browser-based web client — all deployable in under 15 minutes with a 25-day free trial.
-
10
Infinite Scroll
Automatically add next page
Infinite Scroll is a JavaScript plugin that automatically adds the next page, saving users from a full page load. You’ve likely seen it in use all over the web. The original version of Infinite Scroll was first released by Paul Irish 2008. It was a break-through work of front-end development, granting web developers a cutting edge experience via a user-friendly yet powerful jQuery plugin. That lineage scrolls on to this day. Infinite Scroll v4 supports Chrome 60+, Edge 79+, Firefox 55+, Safari 11+. For IE10 and Android 4 support, try Infinite Scroll v3. Infinite Scroll upholds URLs by changing them automatically as the user scrolls. Users can refresh the current page or return to a scrolled page and their position will be maintained. No more tears when you scroll 20 pages and accidentally hit refresh. Try out the full page demo. -
11
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. -
12
JSON Splora
GUI app for editing, visualizing, and manipulating JSON data
JSON-Splora is a GUI for editing, visualizing, and manipulating JSON data with jq or JavaScript. The editor is a JavaScript editor, and the input is parsed as json5. This allows for comments as well as a relaxed JSON input format. Once the editor has valid JSON, an input window will appear below, allowing you to manipulate the object with JavaScript or jq. A panel will appear to the right with the output, and updates live as the input or filter changes. -
13
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. -
14
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. -
15
JsAction
JsAction is a small event delegation library
JSAction is a JavaScript framework developed by Google that provides a structured, event-driven architecture for managing user interactions in large-scale web applications. It simplifies event handling by declaratively binding actions to DOM elements through HTML attributes, enabling clean separation between markup and behavior. JSAction helps improve performance, maintainability, and reliability by minimizing the use of inline scripts and global event listeners. It is especially useful in complex front-end environments where efficient event delegation and well-defined interaction flows are crucial. -
16
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. -
17
KeepChatGPT
Browser userscript that enhances ChatGPT reliability and usability
KeepChatGPT is an open source browser userscript designed to enhance the reliability, usability, and efficiency of the ChatGPT web interface. It runs through userscript managers and injects additional functionality directly into the page, allowing users to improve their workflow without requiring a backend service or separate application. It focuses on solving common problems experienced during AI conversations, such as session timeouts, network errors, message failures, and interruptions during long chats. By automating session refresh and maintaining active connections, KeepChatGPT reduces the need for repeated manual steps when recovering from errors or expired sessions. KeepChatGPT also introduces a variety of enhancements that improve the overall interface and user experience, including page cleanup, expanded display layouts, conversation cloning, and detailed chat information. -
18
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. -
19
Knockoff
Chrome extension that filters pseudo-brand junk out of Amazon
Knockoff is a browser extension that reduces low-trust and pseudo-brand listings while shopping on Amazon. It examines product brands locally and classifies them with personal lists, curated databases, community data, and readable naming heuristics. Users can hide, dim, or label filtered products without permanently removing access to them. Three filtering levels range from blocking known problem brands to allowing only recognized brands. Interactive badges let shoppers trust a brand, block it, reveal an item once, or report an incorrect decision. The extension requires no account, performs no tracking, and makes no server request during the normal shopping path. It supports Amazon marketplaces through Chrome, Firefox, and Safari, although its language heuristics are tuned primarily for English. -
20
Kubebox
Terminal and Web console for Kubernetes
Terminal and Web console for Kubernetes. Kubebox can be served from a service hosted in your Kubernetes cluster. Terminal emulation is provided by Xterm.js and the communication with the Kubernetes master API is proxied by the server. -
21
LaVague
Framework for building AI agents that automate complex web tasks
LaVague is an open source framework designed to help developers build AI-powered web agents capable of automating tasks across websites and web applications. It implements the concept of a Large Action Model framework, allowing agents to interpret a user-provided objective and translate it into a sequence of actions performed in a browser. These agents can navigate web pages, retrieve information, fill out forms, and execute multi-step workflows automatically. LaVague is centered around a World Model that analyzes the current webpage state and determines the next set of instructions, combined with an Action Engine that converts those instructions into executable automation code. It can use browser automation tools such as Selenium or Playwright to interact with websites programmatically. Developers can integrate various language models and configure the agent’s reasoning and execution behavior to suit different automation scenarios. -
22
Learn Git Branching
An interactive git visualization and tutorial
LearnGitBranching (LGB) is a Git repository visualizer, sandbox, and interactive tutorial platform that teaches Git concepts through visualization and gamified challenges. Instead of only typing commands into the terminal, users see a live commit tree update dynamically as they experiment with branching, merging, rebasing, and more. It features both sandbox mode for free exploration and structured levels to guide learners through Git fundamentals and advanced workflows. Designed entirely client-side in JavaScript, it can run in the browser or be self-hosted, with additional support for creating and sharing custom levels. -
23
LeetCode Python
LeetCode Solutions: A Record of My Problem Solving Journey
This repository is a comprehensive personal journal of LeetCode problem-solving journey. It includes detailed solutions with code, algorithm insights, data structure summaries, Anki flashcards, daily challenge logs, and future planning sections. -
24
Libros de Programación en Español
List of programming books in Spanish for free
Libros de Programación en Español is a curated list of free programming books in Spanish, organized by topic and technology so learners can find high-quality materials without cost. The README is structured as an index with general programming books, followed by sections for specific languages such as JavaScript, TypeScript, Python, Ruby, Rust, PHP, Haskell, Go, Kotlin, Java, and R.Each entry includes the book title, author, and a link to the official or legal free version (PDF, HTML, eBook, etc.), focusing on resources that are legitimately available. Beyond languages, the list also covers frameworks and libraries (like React and Qwik), tools (such as Git), and databases (SQL), grouping them in separate sections for easier browsing. The repository includes a code of conduct and contributing guidelines, inviting the community to help maintain the catalog and keep links up to date. -
25
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.