Open Source JavaScript Software - Page 90
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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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bookdown
Authoring Books and Technical Documents with R Markdown
A open-source (GPL-3) R package to facilitate writing books and long-form articles/reports with R Markdown. Generate printer-ready books and ebooks from R Markdown documents. A markup language easier to learn than LaTeX, and to write elements such as section headers, lists, quotes, figures, tables, and citations. Multiple choices of output formats: PDF, LaTeX, HTML, EPUB, and Word. Possibility of including dynamic graphics and interactive applications (HTML widgets and Shiny apps) Support for languages other than R, including C/C++, Python, and SQL, etc. LaTeX equations, theorems, and proofs work for all output formats. Can be published to GitHub, bookdown.org, and any web servers. Integrated with the RStudio IDE. The easiest way to start a new Bookdown project is from within RStudio IDE. Go to File, New Project, New Directory, Book project using bookdown. -
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budō
A dev server for rapid prototyping
budo is a developer-focused local development server built on top of Browserify, optimized for rapid JavaScript prototyping. It automatically bundles source files and serves them through a lightweight local server, enabling fast iteration during development. One of its core strengths is incremental bundling combined with LiveReload integration, which updates the browser when files change. The tool delays responses until the bundle is ready, preventing stale or incomplete builds during refreshes. budo is widely used in creative coding and small web app workflows where minimal configuration and quick feedback loops are essential. Its extensible API also allows developers to build custom tooling on top of the server. -
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chinese-dos-games-web
Source code for chinese-dos-games-web
Chinese-dos-games-web. Source code of https://dos.zczc.cz. -
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concurrency-logger
Log HTTP requests/responses separately, visualize their concurrency
HTTP logging middleware is especially useful to unwind concurrent operations without losing the request context. -
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core-js
Modular standard library for JavaScript
Modular standard library for JavaScript. Includes polyfills for ECMAScript up to 2021: promises, symbols, collections, iterators, typed arrays, many other features, ECMAScript proposals, some cross-platform WHATWG / W3C features and proposals like URL. You can load only required features or use it without global namespace pollution. The maintainers of core-js and the maintainers of 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. If you use core-js with the extension of native objects, recommended load all core-js modules at the top of the entry point of your application, otherwise, you can have conflicts. -
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cross-fetch
Universal WHATWG Fetch API for Node, Browsers and React Native
Universal WHATWG Fetch API for Node, Browsers and React Native. The scenario that cross-fetch really shines is when the same JavaScript codebase needs to run on different platforms. Platform agnostic, browsers, Node or React Native. Optional polyfill, it's up to you if something is going to be added to the global object or not. Simple interface, no instantiation, no configuration and no extra dependency. WHATWG compliant, it works the same way wherever your code runs. TypeScript support, better development experience with types. -
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darwin-skill
Autoresearch-inspired autonomous skill optimization for Claude Code
darwin-skill is an experimental framework designed to automatically improve AI agent “skills” through iterative evaluation and optimization loops inspired by machine learning training processes. Instead of treating prompts or skill definitions as static assets, the system applies a continuous improvement cycle that evaluates performance, proposes changes, tests outcomes, and either retains or reverts modifications. The framework introduces a scoring system across multiple dimensions, enabling quantitative assessment of skill quality and ensuring that only improvements are preserved over time. It incorporates a “ratchet mechanism” similar to version control workflows, guaranteeing that performance never degrades as iterations progress. The system also separates the agents responsible for editing and evaluating skills to avoid bias, which improves the reliability of optimization results. -
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dash.js
A reference client implementation for the playback of MPEG DASH
A reference client implementation for the playback of MPEG DASH via JavaScript and compliant browsers. If your intent is to use the player code without contributing back to this project, then use the MASTER branch which holds the approved and stable public releases. If your goal is to improve or extend the code and contribute back to this project, then you should make your changes, and submit a pull request. dash.js is an initiative of the DASH Industry Forum to establish a production quality framework for building video and audio players that play back MPEG-DASH content using client-side JavaScript libraries leveraging the Media Source Extensions API set as defined by the W3C. The core objectives of this project are to build an open source JavaScript library for the playback of DASH. Supports a wide array of features including in-band events, multiple-periods and cross-browser DRM. -
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decimal.js
An arbitrary-precision Decimal type for JavaScript
decimal.js is a JavaScript library that provides an arbitrary-precision decimal data type designed to overcome the limitations of native floating-point arithmetic in JavaScript. It allows developers to perform accurate calculations with numbers of virtually unlimited precision, making it especially useful for financial, scientific, and high-precision applications. Unlike standard JavaScript numbers, which can produce rounding errors due to binary representation, decimal.js ensures consistent and predictable results by operating on decimal values directly. The library defines a Decimal constructor that accepts numbers, strings, or existing Decimal instances, enabling flexible usage across different input types. It supports a wide range of mathematical operations, including arithmetic, logarithmic, trigonometric, and exponential functions, making it significantly more comprehensive than simpler numeric libraries. -
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discord.io
A small, single-file library for creating DiscordApp clients
A small, single-file, fully featured Discordapp library for Node.js and browsers. -
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douyin
Open source Douyin crawler for collecting and downloading public data
DouyinCrawler is an open source data collection tool designed to gather publicly available information from the Douyin platform. It demonstrates how to build a Python-based web crawler combined with a graphical interface and command line functionality. It allows users to collect data from various types of Douyin content, including user profiles, videos, hashtags, and music pages. DouyinCrawler supports both automated scraping and batch operations to process multiple targets efficiently. It also integrates with the Aria2 download utility to enable large-scale downloading of videos and images associated with collected content. It includes multiple usage modes such as a desktop GUI, a web service interface, and a command line tool for flexible deployment. In addition to data collection, it supports incremental updates so users can track and gather newly published content without reprocessing previously collected data. -
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Egg Mongoose is a plugin for integrating Mongoose with the Egg.js framework, enabling MongoDB connectivity and schema management in Egg.js applications.
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electron-vue-cloud-music
Electron + Vue
Electron + Vue imitation NetEase cloud music windows client. Automatic/manual check for updates. Nedb database persistence. Customize the installation path and beautify the installation interface. Start the client in the browser. Travis CL, AppVeyor build automatically. Skinning, downloading, local song matching, desktop notification of network changes, sharing songs/playlists/MV/videos to QQ space. Login, Private Fm, Playlists, Albums, Artists, Charts, MVs, Videos, Comments, Searches, Users, Dynamics, Fans, Follow, Cloud Disks, Favorites... Heartbeat mode, lyrics fine-tuning, next play, additional play, single loop, random play, list loop. Routing orientation, partial refresh, home page column adjustment and persistence. -
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embed-js
A lightweight plugin to embed emojis, media, maps, tweets, code, etc.
A lightweight JavaScript plugin to embed emojis, media, maps, tweets, code and services. embed.js was developed with a modern JavaScript workflow in mind. To use it, it's recommended you have a build system in place that can transpile ES6, and bundle modules. But at the same time, you get an already transpiled version to make your development easier. If you’re using npm package manager with a module bundler like Webpack or Browserify to consume CommonJS modules, you can use the default UMD build of the plugin by simply requiring it. The render() method renders the resulting string in the block. The .render() method also returns a promise. Optionally you can also pass a string which will be processed by the plugin. -
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epub-press-clients
Clients for building books with EpubPress
epub-press-clients is a collection of client-side tools that allow users to convert web pages, articles, or entire websites into EPUB eBooks. It is designed for readers who want to save content for offline reading on eReaders. -
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express-status-monitor
Realtime Monitoring solution for Node.js/Express.js apps
Simple, self-hosted module based on Socket.io and Chart.js to report real-time server metrics for Express-based node servers. Monitor can be configured by passing options object into expressMonitor constructor. You can add a series of health checks to the configuration that will appear below the other stats. The health check will be considered successful if the endpoint returns a 200 status code. The HTML page handler is exposed as a pageRoute property on the main middleware function. So the middleware is mounted to intercept all requests while the HTML page handler will be authenticated. If you're using socket.io in your project, this module could break your project because this module by default will spawn its own socket.io instance. To mitigate that, fill websocket parameter with your main socket.io instance as well as port parameter. -
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ffmpeg.js
Port of FFmpeg with Emscripten
ffmpeg.js is a JavaScript port of the FFmpeg multimedia framework compiled with Emscripten, enabling video and audio processing directly within browsers or Node.js environments. It provides prebuilt modules optimized for web use, balancing performance and file size while supporting common encoding and decoding tasks. By running entirely in JavaScript through asm.js, it allows developers to manipulate media files without requiring native binaries or server-side processing. The library supports different builds tailored for formats like WebM and MP4, including worker-based versions for improved performance in web applications. It exposes a programmatic API that mirrors FFmpeg command-line behavior, allowing developers to pass arguments and handle input and output streams in memory. This makes it especially useful for browser-based editors, converters, and multimedia tools. Overall, ffmpeg.js brings powerful media processing capabilities to client-side environments with minimal setup. -
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flv.js
HTML5 FLV Player
An HTML5 Flash Video (FLV) Player written in pure JavaScript without Flash. This project relies on Media Source Extensions to work. flv.js works by transmuxing FLV file stream into ISO BMFF (Fragmented MP4) segments, followed by feeding mp4 segments into an HTML5 <video> element through Media Source Extensions API. flv.js is written in ECMAScript 6, transpiled into ECMAScript 5 by Babel Compiler, and bundled with Browserify. FLV container with H.264 + AAC / MP3 codec playback. Multipart segmented video playback. HTTP FLV low latency live stream playback. FLV over WebSocket live stream playback. Compatible with Chrome, FireFox, Safari 10, IE11 and Edge. Extremely low overhead, and hardware accelerated by your browser! -
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git-peek
git repo to local editor instantly
git peek is the fastest way to open a remote git repository in your local text editor. Use it when you want to browse or search other people's code with your own editor. Pass git peek a git repository or a github link, and it will quickly fetch and open it in your local editor. It stores the repository in a temporary directory and deletes it when you close the editor or git peek. If you don't pass git peek input, it will let you search Github repositories and show trending repositories. If you paste a link to a file on GitHub, it will quickly open the file in your local editor. If you pass it a GitHub repository, it fetches a tarball instead of using git and decompresses it while downloading it (streaming). From unscientific benchmarks, this is about 2x faster than cloning. While downloading & decompressing the tarball, it also downloads the specific file linked to (or the README.md) via JSDelivr's CDN. -
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h265ize
A node utility utilizing ffmpeg to encode videos with the hevc codec
h265ize is a command-line tool that automates the conversion of video files to the H.265/HEVC codec using FFmpeg. It is designed to reduce file sizes while maintaining high visual quality, making it ideal for archiving and storage optimization. The tool scans directories, identifies compatible files, and processes them automatically with predefined encoding settings. It emphasizes ease of use by minimizing the need for manual configuration. h265ize can skip already optimized files and manage output efficiently. It is particularly useful for users managing large media libraries. The project focuses on balancing compression efficiency with visual fidelity. -
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history
Manage session history with JavaScript
The history library lets you easily manage session history anywhere JavaScript runs. A history object abstracts away the differences in various environments and provides a minimal API that lets you manage the history stack, navigate, and persist state between sessions. Development of the current stable release, version 5, happens on the master branch. Please keep in mind that this branch may include some work that has not yet been published as part of an official release. However, since master is always stable, you should feel free to build your own working release straight from master at any time. history is developed and maintained by React Training. If you're interested in learning more about what React can do for your company, please get in touch! -
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hotel
A simple process manager for developers
hotel is a developer tool that manages local services behind a friendly dashboard and automatically provisions per-project HTTP proxies. Instead of remembering port numbers and launch commands, you register apps once and then start, stop, or auto-start them from a central UI. The tool sets up a lightweight reverse proxy so each service gets a nice local domain, reducing friction when switching between multiple apps and APIs. Cross-platform support and a simple configuration format make it easy to onboard a team to a shared local workflow. Because hotel can run commands to boot services on demand, laptops stay quieter and lighter until you actually need a process. It’s especially handy in polyglot repos where Node, Python, or Go services otherwise require bespoke scripts and ports. -
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hygen
The simple, fast, and scalable code generator
Generators are self-contained and folder structure makes up the command structure. Complex is easy but simple is hard. Contextual template lookup, pull requests that look nice and clean, structured file organization, make generators fun again! Constantly benchmarked and dependencies are carefully considered to shorten startup and generation time. Built-in scaffolds to quickly create generators. Full logic templates and rendering. Prompts and flows for taking in arguments. Automatic CLI arguments. Adding new files, injecting into existing files. Running shell commands. Super fast, constantly optimized for speed. Hygen can be used to supercharge your workflow with Redux, React Native, Express and more, by allowing you avoid manual work and generate, add, inject and perform custom operations on your codebase. -
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iOS Location Spoofer
Standalone iOS app to spoof GPS location without jailbreak
iOS Location Spoofer is an unofficial iOS location modification project that works through proxy-based HTTPS interception instead of jailbreak tooling. It is based on earlier research that used a custom VPN and MITM proxy, but this repository ports the core logic to JavaScript for popular proxy apps. The project targets Shadowrocket, Surge, Loon, Quantumult X, and Stash through importable module or plugin files. It rewrites Apple location-service responses so the device calculates a chosen latitude and longitude. The repository also includes support for Wi-Fi and cellular tower coordinate rewriting, response-format compatibility handling, motion activity rewriting, and optional web-based location picking. Because it modifies device location behavior, it should only be used in legal, personal, and non-deceptive testing contexts. -
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iView
A high quality UI Toolkit built on Vue.js
iView is a high quality, open source UI Toolkit built on Vue.js, offering dozens of useful and beautiful components including fonts, icons, layouts, navigation and more. Each component has several options for you to choose from, giving you absolute freedom and choice to achieve the exact look you would like for your interface. iView also comes with a customizable default theme and a friendly API that's easy for people of any skill level. It's default language is Chinese but it does support plenty of other languages. iView currently supports both Vue.js 2 and Vue.js 1.