Open Source JavaScript Software - Page 56
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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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System Prompts Leaks
Collection of extracted System Prompts from popular chatbots
System Prompts Leaks is a curated repository that collects known leaked or publicly exposed system prompts used by large language models, organized so researchers, developers, and AI safety advocates can analyze them in one place. The project highlights how system prompts — instructions that strongly influence model behavior — have been inadvertently shared in forums, datasets, and open repositories, illustrating common patterns and potential vulnerabilities in prompt design and deployment. By aggregating these prompts, the repository serves as a valuable resource for understanding how widely different models are being guided in the wild, which helps with comparative analysis across architectures and service providers. It also helps raise awareness around prompt security, showing how exposed system instructions can lead to unintended behaviors or exploitation if not properly protected. -
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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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Tailor
A streaming layout service for front-end microservices
A high-performance layout service for assembling micro frontends dynamically using server-side rendering. -
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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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Text2Video
Software tool that converts text to video for more engaging experience
Text2Video is a software tool that converts text to video for more engaging learning experience. I started this project because during this semester, I have been given many reading assignments and I felt frustration in reading long text. For me, it was very time and energy-consuming to learn something through reading. So I imagined, "What if there was a tool that turns text into something more engaging such as a video, wouldn't it improve my learning experience?" I created a prototype web application that takes text as an input and generates a video as an output. I plan to further work on the project targeting young college students who are aged between 18 to 23 because they tend to prefer learning through videos over books based on the survey I found. The technologies I used for the project are HTML, CSS, Javascript, Node.js, CCapture.js, ffmpegserver.js, Amazon Polly, Python, Flask, gevent, spaCy, and Pixabay API. -
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Tiledesk Server
Tiledesk Server is the main API component of the Tiledesk platform
Tiledesk Server is the backend component of the Tiledesk platform, providing a comprehensive open-source live chat system with integrated chatbot capabilities for customer support and engagement. -
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Tkoa
Koa web app framework written in typescript
Tkoa is a Koa web app framework written in Typescript. Although written in Typescript, you can still use the Node.js framework and koa middleware. Not only that, you can also enjoy type checking and convenient testing with typescript. -
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Toggl Track
Toggl Track browser extension for Chrome and Firefox
Track time in Toggl Track without leaving your browser and the online apps you usually spend time on. Available for Chrome and Firefox. Our browser extension (previously called Toggl Button) for Chrome and Firefox lets you track time in your favorite web tools and wherever you are on the web. The Toggl Track browser extension integrates with 100+ popular tools. Toggl Track browser extension was previously called Toggl Button. Beyond the name and colors, no other changes have been made. Microsoft Edge has support for Chromium extensions, so you can use the Toggl Track browser extension on Microsoft Edge by downloading it from the Chrome Store. Once you install the add-on, a Toggl Track icon will be added to the right of the address bar. Click on the Toggl Track browser extension to reveal the timer’s dropdown. Here you can check your current time entry, change settings, sync, log out or stop your timer. -
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TopoJSON
An extension of GeoJSON that encodes topology
TopoJSON eliminates redundancy, allowing related geometries to be stored efficiently in the same file. For example, the shared boundary between California and Nevada is represented only once, rather than being duplicated for both states. A single TopoJSON file can contain multiple feature collections without duplication, such as states and counties. Or, a TopoJSON file can efficiently represent both polygons (for fill) and boundaries (for stroke) as two feature collections that share the same arc mesh. See How To Infer Topology for a visual explanation of how TopoJSON works. See Command-Line Cartography for an introduction to TopoJSON and related tools. See TopoJSON Format Specification for the format specification. To further reduce file size, TopoJSON can use quantized delta-encoding for integer coordinates. This is similar to rounding coordinate values (e.g., LilJSON), but with greater efficiency and control over loss of information. -
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Tuya API
An easy-to-use API for devices that use Tuya's cloud services
A Node.js library that enables control of Tuya smart devices without using the official Tuya cloud, allowing local LAN control of IoT devices. -
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UglifyJS 3
JavaScript parser, mangler, compressor, beautifier toolkit
UglifyJS is a JavaScript compressor/minifier written in JavaScript. It also contains tools that allow one to automate working with JavaScript code. A parser which produces an abstract syntax tree (AST) from JavaScript code. A code generator which outputs JavaScript code from an AST, also providing the option to get a source map. A compressor (optimizer). it uses the transformer API to optimize an AST into a smaller one. A mangler, reduce names of local variables to (usually) single-letters. A scope analyzer, which is a tool that augments the AST with information about where variables are defined/referenced etc. A tree walker, a simple API allowing you to do something on every node in the AST. A tree transformer, another API intended to transform the tree. All the above utilities and APIs are defined in ~6500 lines of code (except for the effective generation of the source-map, which is handled by the source-map module). Compared to alternatives, UglifyJS is pretty small. -
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V Programming Language
Simple, fast, safe, compiled language for developing software
Simple language for building maintainable programs. You can learn the entire language by going through the documentation over a weekend, and in most cases, there's only one way to do something. This results in simple, readable, and maintainable code. Despite being simple, V gives a lot of power to the developer and can be used in pretty much every field, including systems programming, webdev, gamedev, GUI, mobile, science, embedded, tooling, etc. V avoids doing unnecessary allocations in the first place by using value types, and string buffers, promoting a simple abstraction-free code style. Most objects (~90-100%) are freed by V's auto-free engine: the compiler inserts necessary free calls automatically during compilation. A remaining small percentage of objects is freed via GC. The developer doesn't need to change anything in their code. "It just works", like in Python, Go, or Java, except there's no heavy GC tracing everything or expensive RC for each object. -
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Vanilla Framework
From community websites to web applications, this CSS framework
Backed by open-source code and written in Sass by the Canonical Web Team. Vanilla contains a responsive CSS grid, basic style for HTML elements and a selection of key useful patterns and utility classes that you can extend. Designed to be composable, you can include the whole framework to avail of all styles or you can use only what you need for your project. Anyone can contribute to Vanilla, improve it and extend it. All the code is available on GitHub and is licensed under LGPLv3 by Canonical. -
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Vue Native
Vue Native is a framework to build cross platform native mobile apps
Vue Native is a framework to build cross-platform native mobile apps using JavaScript. It is a wrapper around the APIs of React Native. So, with Vue Native, you can do everything that you can do with React Native. With Vue Native, you get the simplicity of Vue.js. Incrementally build user interfaces with the familiar syntax of HTML and CSS in single file components. Seamless interop with React Native. Use core React Native components with Vue.js syntax out of the box to develop mobile apps on both iOS and Android. The Vue Native CLI can be used to easily generate a fully configured Vue Native app. It wraps expo-cli and react-native-cli to generate a simple single page application (SPA) after installing and configuring dependencies from vue-native-core. You should have either expo-cli or react-native-cli installed as a global dependency. -
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Warhammer 40K Icon
Warhammer 40000 icons
Free to download Warhammer 40.000 icons as SVG/iconfont. Symbols and names belong to Games Workshop. -
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WatchIt App
Open movies everywhere
WatchIt decentralizes the way you watch your movies. In short, it is a "collective entertainment methodology" in which each user consumes movies from the network and at the same time shares movies with other users. Indeed, Watchit is a movie playback system, in its most basic form it allows you to filter, search, play movies. Well, in order to decentralize our movies so that everyone can have access to them, we resorted to incredible tools such as IPFS and OrbitDB, which allowed us to have created a DAPP (Decentralized App). In simple words, Watchit is an application that does not require external resources, but rather everyone helps everyone to make it work. It is also possible that WatchIt can be synchronized through different movie channels opening the possibility to many libraries with different content across the network. -
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Web Dev for Beginners
About 24 Lessons, 12 Weeks, Get Started as a Web Developer
Web-Dev-For-Beginners is Microsoft’s open source, project-based curriculum for learning web development from scratch. Designed as a 12-week, 24-lesson course, it covers HTML, CSS, and JavaScript fundamentals through hands-on projects like terrariums, browser extensions, and space games. Each lesson includes a mix of pre-lecture quizzes, written content, assignments, challenges, and post-lecture quizzes to reinforce learning. The course also offers global accessibility with translations in more than 40 languages and built-in support for running in GitHub Codespaces or locally in Visual Studio Code. This makes it a practical and engaging way for beginners to gain a solid foundation in web development. -
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Web Experience Toolkit
Open source code library for building innovative websites
Web Experience Toolkit (WET): Open source code library for building innovative websites that are accessible, usable, interoperable, mobile-friendly and multilingual. This collaborative open source project is led by the Government of Canada. A collection of flexible and themeable templates and reusable components. A collaborative open source project led by the Government of Canada. HTML5-first approach (leveraging native HTML5 support and filling support gaps with “polyfills”) Supporting a wide variety of browsers (IE, Firefox, Chrome, Safari, Opera) Building support for HTML data (RDFa 1.1 Lite, Schema.org) Adapts to different screen sizes and device capabilities. Touchscreen support. Optimized for performance. Building support for device-based mobile applications. -
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Web Scrobbler
Scrobble music all around the web!
Web Scrobbler helps music listeners to scrobble their online playback history. Web Scrobbler is a browser extension created for people who listen to music online through their browser, and would like to keep an updated playback history using scrobbling services, such as Last.fm, Libre.fm and ListenBrainz. Download and install the extension for your browser. You can use the download buttons above. Open the extension options, and expand the "Accounts" section, then sign in to a scrobbling service you want to use. Just open any of the websites supported (e.g. Spotify) and start listening to music. Scrobble your music to Last.fm, Libre.fm, and ListenBrainz scrobbling services. The metadata filter cleans track info up and removes redundant track suffixes. Notifications of now playing tracks with extended track info (a website name, a track play count). We currently support scrobbling to 280 different websites with more being added with each release. -
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Web server for Lad
Web server for Lad
Web server for Lad. -
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Website
Hack for LA's website
Hack for LA's website. -
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Wiseflow
Enhance any agent's browser use skill
Wiseflow is an open-source information extraction and knowledge discovery system designed to collect, filter, and organize valuable information from large volumes of online content. The platform continuously monitors specified sources such as websites, social platforms, and other digital channels to identify relevant data according to user-defined interests or topics. By combining web crawling, content parsing, and large language model analysis, the system extracts concise insights from raw information streams and converts them into structured data that can be stored or analyzed. This automated workflow helps reduce the noise associated with large information ecosystems and highlights the most important insights for users. Wiseflow can automatically categorize extracted content, assign tags, and upload processed results into databases or knowledge systems for further use. -
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Workbox
JavaScript libraries for Progressive Web Apps
Workbox is a set of libraries that can power a production-ready service worker for your Progressive Web App. Stop waiting on the network! You can improve your web app's performance by caching and serving your files, powered by a service worker. Even on an unreliable connection, your web app can still work using the right runtime caching strategies. Looking to build a progressive web app? Workbox makes it easy to create an offline first experience. Workbox is a library that bakes in a set of best practices and removes the boilerplate every developer writes when working with service workers. Precaching, runtime caching, strategies, request routing, background sync, and helpful debugging. Wish you could rely on Google Fonts being available offline after the user has visited your site? Add a quick rule to serve them from the cache. Make your JS and CSS fast by returning the assets from the cache, while making sure they are updated in the background for the next use. -
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Yeoman (Yo)
CLI tool for running Yeoman generators
Yeoman is a robust scaffolding tool for modern web applications, enabling developers to generate complete project structures and boilerplate code through a vast ecosystem of generators. -
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ZenTime Meditation Web App
Simple meditation timer web app built with React.js and mobX
Simple meditation timer web app based on react-mobx-react-router4-boilerplate, built with React, React-Router 4, MobX & Webpack 3.
