Open Source JavaScript Software - Page 46
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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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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.
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Fully Managed MySQL, PostgreSQL, and SQL ServerCloud SQL handles your database ops end to end, so you can focus on your app.
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Smart Excalidraw
A smart, powerful, and beautiful excalidraw drawing tool
Smart Excalidraw Next is an AI-powered diagramming tool that allows users to generate professional-quality visual diagrams directly from natural language descriptions, combining generative AI with the flexibility of the Excalidraw canvas. It leverages large language models to interpret user input and automatically produce structured diagrams such as flowcharts, architecture diagrams, ER diagrams, and mind maps with logical layouts and clean visual organization. One of its key innovations is a smart connection algorithm that optimizes how elements are linked, reducing visual clutter and ensuring clarity in complex diagrams. The tool integrates seamlessly with the Excalidraw format, allowing users to refine, edit, and customize AI-generated diagrams manually on an interactive canvas. It supports more than twenty diagram types and can automatically select the most appropriate format based on the user’s description, making it highly adaptable across technical and creative use cases. -
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SmartYouTubeTV
Watch YouTube videos on your TV and set-top-box with comfort
SmartTubeLegacy is an alternative YouTube client designed for Android TV devices, focusing on providing a cleaner and more customizable viewing experience. It removes ads and unnecessary distractions, allowing users to focus on content without interruptions. The application includes advanced playback features such as background play, customizable controls, and improved navigation. It is optimized for TV interfaces, ensuring smooth performance and usability with remote controls. The project also supports user preferences, enabling customization of the interface and playback behavior. It is particularly popular among users who want a more streamlined and user-controlled YouTube experience. Overall, SmartTubeLegacy enhances the default YouTube experience by prioritizing usability, customization, and performance. -
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SockJS-node
WebSocket emulation - Node.js server
The maintainers of SockJS and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open-source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. SockJS is a JavaScript library (for browsers) that provides a WebSocket-like object. SockJS gives you a coherent, cross-browser, Javascript API which creates a low latency, full duplex, cross-domain communication channel between the browser and the web server, with WebSockets or without. This necessitates the use of a server, which this is one version of, for Node.js. -
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SocketCluster
Highly scalable realtime pub/sub and RPC framework
Highly scalable pub/sub and RPC toolkit optimized for async/await. Pub/sub-channels are very cheap. You can have millions of unique channels without worrying about memory or CPU usage. Channels are automatically cleaned up when they are no longer used. The socket cluster CLI tool exposes kubectl (Kubernetes) shortcut commands to make deploying your app to any Kubernetes cluster really easy. All necessary Kubernetes .yaml files are provided. After deploying your app to a Kubernetes cluster, you can scale indefinitely by using the kubectl scale deployment command to add more SCC-worker and SCC-broker instances as needed. You can perform asynchronous operations anywhere along a socket's inbound or outbound stream without any risk of disrupting the message processing order. Awaiting asynchronous actions along a socket's inbound or outbound streams can cause messages to pile up. -
Train ML Models With SQL You Already KnowBuild 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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SoundCleod
SoundCloud for macOS and Windows
SoundCleod is a desktop application that brings SoundCloud to macOS and Windows without using a web browser. Compared to using SoundCloud.com in a web browser like Chrome or Firefox you will get extras when using SoundCleod. Dark mode, desktop notifications. Control playback using media keys on the keyboard. True full screen without browser buttons. Control playback from the Notification Center using the Now Playing widget on macOS. Control playback from the macOS application menu. Stop playback when your computer goes to sleep. Close or hide all windows without interrupting playback. SoundCleod is an open source project built by Márton Salomváry released under MIT license. -
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Spearmint
An inclusive, accessibility-first GUI
Easily create, save, and run tests intuitively using Spearmint. Access your app's file directory and codebase while providing a fully functional in-app terminal and browser. When you're ready to continue developing your application, your Jest test files will be in your app's __tests__ folder. Writing tests is like eating your veggies: it's something everyone knows that they should do, but not everyone does. Spearmint provides a simple way to write tests that gives you confidence your application will work in the way your users interact with it. Spearmint provides a user-friendly GUI for developers to easily generate tests with a few clicks of a button. It dynamically converts user inputs into executable test code through react-testing-library, jest, supertest, puppeteer, vue-test-utils, solid-testing-library, and axe-core. Spearmint isn't just for React. Write tests for your Redux actions, async functions, reducers, or middleware. -
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Spectacle
A ReactJS based Presentation Library
Spectacle is an open source presentation library based on React.js. It lets you create sleek presentations using JSX syntax, giving you the ability to live demo your code. Spectacle’s presentations are lively and interactive, with clickable elements, themes, custom backgrounds, animations, and many other fun and unique elements you can add to make your presentations pop. With Spectacle you can also live demo your code in real time without having to leave the presentation deck. Code blocks conveniently auto-size and scroll when there is an overflow of content. See the live demo deck at: https://raw.githack.com/FormidableLabs/spectacle/main/examples/one-page.html -
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Standing Wave 3
Flash ActionScript3 dynamic audio library
Standing Wave 3 is an ActionScript 3 audio library that provides high-level control over the Flash Player’s SampleDataEvent API for streaming audio output. It builds on the foundation of Standing Wave 2 but has been extensively refactored, with its core sample storage and manipulation routines rewritten using Adobe Alchemy for significant performance improvements. Originally derived from the audio engine used in the Noteflight Score Editor, the library allows developers to combine and chain together audio sources, filters, and sequences to create dynamic, real-time sound experiences. Supported audio sources include MP3s, WAV files, and algorithmic generators, while filters enable effects such as echo, equalization, and envelope shaping. The system is flexible enough to handle complex timing sequences of audio, making it suitable for advanced audio applications or interactive projects. -
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Swell
Swell: API development tool that enables developers to test endpoints
Your one-stop shop for sending, monitoring, and testing RESTful, gRPC, GraphQL, Websocket, OpenAPI, WebRTC, Webhooks, and streaming API requests. Now with Stress testing and Mocking. Swell supports full HTTP2 multiplexing of requests and responses. HTTP requests to the same host will be sent over the same connection. Swell will attempt to initiate an HTTP2 connection for all HTTPS requests by default, but will revert to HTTP1.1 for legacy servers. Multiple concurrent streams are allowed for each connection. -
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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Swing
A swipeable cards interface
Swing is a JavaScript library designed to create realistic swipeable card interfaces similar to those popularized by dating applications. It provides physics-based animations that simulate natural movement when users drag and release cards, enhancing user interaction and engagement. The library allows developers to build interfaces where elements can be swiped left, right, or in other directions, triggering specific actions. It is highly customizable, enabling control over thresholds, directions, and animation behavior. Swing is lightweight and framework-agnostic, making it easy to integrate into different web projects without heavy dependencies. It is commonly used for building interactive UI components such as recommendation systems or decision-based interfaces. Overall, swing offers a simple yet powerful way to implement gesture-driven interactions in web applications. -
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SwissGL
SwissGL is a minimalistic wrapper on top of WebGL2 JS API
SwissGL is a compact JavaScript library that provides a streamlined abstraction layer over the WebGL2 API, designed to minimize boilerplate when building GPU-accelerated graphics, simulations, and procedural visualizations. Acting as a "Swiss Army knife" for WebGL2, it simplifies shader, texture, and framebuffer management into a single, expressive interface that enables developers to write complex GPU workflows in just a few lines of code. The library centers around one main function that unifies rendering and compute operations, allowing the creation of particle systems, GPGPU effects, and real-time simulations entirely on the GPU. Despite its simplicity and small size (under 1000 lines of code), SwissGL demonstrates remarkable flexibility, from basic visual experiments to complex multi-pass rendering pipelines. It’s also designed as an exploration of minimalist graphics API design, serving as an early experimental step toward the upcoming WebGPU era. -
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SyntaxHighlighter
Self-contained code syntax highlighter developed in JavaScript
SyntaxHighlighter is THE client side highlighter for the web and web-apps! It's been around since 2004 and it's used virtually everywhere to seamlessly highlight code for presentation purposes. The history of this project predates majority of the common web technologies and it has been a challenge to dedicate time and effort to keep it up to date. Everything used to be in one file and assign window variables. SyntaxHighlighter is currently used and has been used in the past by Microsoft, Apache, Mozilla, Yahoo, Wordpress, Bug Labs, Freshbooks and many other companies and blogs. As it always goes with open source, you are welcome to use SyntaxHighlighter free of charge. -
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TURF
A modular geospatial engine written in JavaScript
Turf is a JavaScript library for spatial analysis. It includes traditional spatial operations, helper functions for creating GeoJSON data, and data classification and statistics tools. Turf can be added to your website as a client-side plugin, or you can run Turf server-side with Node.js. Modular, simple-to-understand JavaScript functions that speak GeoJSON. Turf is a collection of small modules, you only need to take what you want to use. Takes advantage of the newest algorithms and doesn't require you to send data to a server. TypeScript definitions are packaged with each module. No DefinitelyTyped packages required. Turf uses GeoJSON for all geographic data. Turf expects the data to be standard WGS84 longitude, latitude coordinates. Check out geojson.io for a tool to easily create this data. -
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Tab-Session-Manager
WebExtensions for restoring and saving window / tab states
WebExtensions for restoring and saving window/tab states. Save and restore the state of windows and tabs. It also supports automatic saving. -
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Tagify
Lightweight, efficient Tags input component in Vanilla JS
Transforms an input field or a textarea into a Tags component, in an easy, customizable way, with great performance and a small code footprint, exploded with features. Customizable HTML templates for the different areas of the component (wrapper, tags, dropdown, dropdown item, dropdown header, dropdown footer) Shows suggestions list (flexible settings & styling) at full (component) width or next to the typed texted (caret) Allows setting suggestions' aliases for easier fuzzy-searching. Auto-suggest input as-you-type with the ability to auto-complete. Can paste in multiple values: tag 1, tag 2, tag 3 or even newline-separated tags. Tags can be created by Regex delimiter or by pressing the "Enter" key/focusing of the input. Validate tags by Regex pattern or by function. Tags may be editable (double-click). -
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Talk to Figma MCP
AI bridge enabling Cursor agents to read and modify Figma designs
cursor-talk-to-figma-mcp is an open source integration that connects AI coding agents with Figma through the Model Context Protocol (MCP). It allows AI tools such as Cursor or other compatible agents to directly communicate with Figma documents and interact with design elements programmatically. Through this integration, an AI assistant can read the structure of a design, retrieve information about nodes or selections, and perform modifications to the layout or content. cursor-talk-to-figma-mcp includes an MCP server and a Figma plugin that communicate through a WebSocket connection, enabling real-time interaction between the AI environment and the design canvas. Developers can automate tasks such as creating UI elements, updating text, organizing layout structures, or managing annotations inside a design file. It also provides strategies and helper prompts that guide AI agents in performing more complex design-related workflows. -
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Taskmaster
An AI-powered task-management system
Taskmaster is an AI-powered task management system designed to enhance AI-driven software development workflows. The project can be integrated into environments such as Cursor, Windsurf, and other AI coding tools to help structure, track, and execute development tasks more effectively. It uses structured task formats and orchestration logic to coordinate how AI assistants plan and complete work. The system supports multiple model providers through configurable keys, allowing teams to choose their preferred AI backend. Its goal is to bring discipline and repeatability to agent-assisted coding by turning loosely defined prompts into organized execution plans. Overall, Claude Task Master functions as a productivity and orchestration layer for developers working with AI coding assistants. -
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TauCeti Classic
Frankenstein lived
TauCetiClassic is an open source fork of Space Station 13 maintained by the Tau Ceti Station community. It builds upon the original SS13 codebase, offering a distinct roleplay-focused experience with custom mechanics, sprites, and maps. The repository includes the full game source, assets, and build scripts necessary to host servers and contribute to development. TauCetiClassic emphasizes immersive roleplay scenarios, detailed station environments, and unique content compared to other SS13 forks. The project is actively developed, with ongoing updates from its community of players and coders. By extending SS13, it provides both a playable multiplayer environment and a collaborative platform for experimentation. -
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TeleBot
The easy way to write Telegram bots in Node.js
The easy way to write Telegram bots in Node.js. Events include keyboard, button, inlineKeyboard, inlineQueryKeyboard, inlineButton, answerList, getMe, sendMessage, deleteMessage, forwardMessage, sendPhoto, sendAudio, sendDocument, sendSticker, sendVideo, sendVideoNote, sendVoice, sendLocation, sendVenue, sendContact, sendChatAction, getUserProfilePhotos, getFile, kickChatMember, unbanChatMember, answerInlineQuery, answerCallbackQuery, answerShippingQuery, answerPreCheckoutQuery, editMessageText, editMessageMedia, editMessageCaption, editMessageReplyMarkup, setWebhook. You can add modifier to process data before passing it to event. Use usePlugins config option to load plugins from pluginFolder directory. A message can only be deleted if it was sent less than 48 hours ago. Any such sent outgoing message may be deleted. Additionally, if the bot is an administrator in a group chat, it can delete any message. -
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TerraGov Marine Corps
TGMC: TerraGov Marine Corps, a SS13 mod
TerraGov Marine Corps (TGMC) is an open source multiplayer game built on the BYOND engine, forked from the Space Station 13 (SS13) codebase. It is a tactical, role-playing game that pits groups of human marines against alien forces in large-scale, cooperative and competitive scenarios. The project focuses heavily on teamwork, coordination, and immersive gameplay, providing players with different roles such as engineers, medics, or combat marines to ensure strategic variety. TGMC offers a persistent, evolving experience where community contributions shape mechanics, balance, and lore. The codebase serves as both a live game server foundation and a development platform for contributors who want to expand gameplay features, design new mechanics, or refine existing systems. With its mixture of roleplay, tactical combat, and science fiction setting, TGMC provides a distinctive twist on the SS13 lineage. -
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The HTML5 Shiv
Enable use of HTML5 sectioning elements in legacy Internet Explorer
The HTML5 Shiv enables use of HTML5 sectioning elements in legacy Internet Explorer and provides basic HTML5 styling for Internet Explorer 6-9, Safari 4.x (and iPhone 3.x), and Firefox 3.x. This includes the basic createElement() shiv technique, along with monkeypatches for document.createElement and document.createDocumentFragment for IE6-8. It also applies basic styling for HTML5 elements for IE6-9, Safari 4.x and FF 3.x. HTML5 Shiv is maintained by Alexander Farkas, Jonathan Neal and Paul Irish, with many contributions from John-David Dalton. It is also distributed with Modernizr. Include the HTML5 shiv in the <head> of your page in a conditional comment and after any stylesheets. HTML5 Shiv works as a simple drop-in solution. In most cases there is no need to configure HTML5 Shiv or use methods provided by HTML5 Shiv. -
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The Magic of CSS
A CSS course to turn you into a magician
Magic of CSS is an open source educational project by Adam Schwartz that explores advanced CSS concepts through practical lessons. It is structured as a series of chapters that cover topics like the box model, layouts, positioning, typography, and animations. The repository is designed to go beyond basic CSS tutorials, teaching how to harness the language for complex, responsive, and visually appealing designs. Each lesson is supported by examples and code that demonstrate real-world use cases. The project emphasizes both the technical and creative potential of CSS, showing how small details can greatly improve user experience. It has become a valuable reference for developers aiming to deepen their front-end skills. -
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Toolkit for YNAB
A general purpose YNAB enhancing browser extension for Chrome
Toolkit for YNAB is a browser extension that enhances your experience with the YNAB Web Application. YNAB have released an exciting new web version. Lots of power users of the older versions are asking for options that are easily implemented in a browser extension. Rather than ask the YNAB team to implement these features, let's just do it ourselves! The Toolkit is available for Chrome and Firefox. The extension is built using Browser (Web) Extension APIs which means support for Edge should be imminent as well. Since the extension is built with Web Extensions and that is not supported by Safari, the extension itself is not supported on Safari. When/if Safari decides to support Web Extensions we will do what we can to provide support for their browser. We've decided that it's better to use the latest and greatest than to wait for browsers to support all the nice newer syntax landing in Javascript. -
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Tree Style Tab
Tree Style Tab, Show tabs like a tree.
This extension to Firefox provides the ability to work with tabs as "trees". New tabs opened from the current tab are automatically organized as "children" of the current tab. Such "branches" are easily folded (collapsed) by clicking on the arrow shown in the "parent" tab, so you no longer need to suffer from too many visible tabs. If you want, you can restructure the tree via drag and drop. Such a tree of tabs will behave like a visual browsing history for you. For example, if you see a list of search results for a topic, each search result link will open in new child tab. New tabs opened from these "child" tabs will appear as descendants of their originating tabs. You'll easily dig and dig deeply, without losing your browsing trail - if you want to go back to the original search result, you just have to switch to the "root" tab. Moreover, each tree will reflect a group of tabs on a similar topic. -
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Tusk
Refined Evernote desktop app
Tusk is an unofficial, open source desktop app for Evernote. It is built for users who want a more refined desktop experience, especially in Linux and cross-platform environments. The app wraps Evernote with extra usability features that improve focus, navigation, appearance, exporting, and keyboard control. It includes several visual modes, including black, dark, sepia, compact, focus, and auto-night modes. It also supports note export to PDF, HTML, and Markdown, which makes it useful for archiving or moving content into other workflows. Tusk is community-driven, free to use, and designed as a polished alternative client rather than an official Evernote product.