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This open-source curriculum introduces the fundamentals of Model Context Protocol (MCP) through real-world, cross-language examples in .NET, Java, TypeScript, JavaScript, Rust and Python. Designed for developers, it focuses on practical techniques for building modular, scalable, and secure AI workflows from session setup to service orchestration.

Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one

JavaScript animation engine

🔪📦 Javascript decompiler for modern frontend

Blazor Component Library based on Material Design principles. Do more with Blazor, utilizing CSS and keeping JavaScript to a bare minimum.

⚓ A collection of high-performance JavaScript tools.

A modern JavaScript utility library that's 2-3 times faster and up to 97% smaller—a major upgrade to lodash.

JavaScript 3D Library.

Node.js JavaScript runtime ✨🐢🚀✨

🍃 JavaScript library for mobile-friendly interactive maps 🇺🇦

Crawlee—A web scraping and browser automation library for Node.js to build reliable crawlers. In JavaScript and TypeScript. Extract data for AI, LLMs, RAG, or GPTs. Download HTML, PDF, JPG, PNG, and other files from websites. Works with Puppeteer, Playwright, Cheerio, JSDOM, and raw HTTP. Both headful and headless mode. With proxy rotation.

一个基于 JavaScript 的网盘文件下载地址获取工具。基于【网盘直链下载助手】修改 ，支持 百度网盘 / 阿里云盘 / 中国移动云盘 / 天翼云盘 / 迅雷云盘 / 夸克网盘 / UC网盘 / 123云盘 八大网盘

A modern animation library for React and JavaScript

Socket-based TS/JavaScript API for WhatsApp Web

Codebase intelligence for TypeScript and JavaScript. Free static layer: unused code, duplication, circular deps, complexity hotspots, architecture boundaries. Optional paid runtime layer: hot-path review and cold-path deletion evidence from real production traffic. Rust-native, sub-second, 95 framework plugins.

A cryptocurrency trading API with more than 100 exchanges in JavaScript / TypeScript / Python / C# / PHP / Go

OpenTelemetry JavaScript Client

:electron: Build cross-platform desktop apps with JavaScript, HTML, and CSS

A modern runtime for JavaScript and TypeScript.

The best JavaScript Data Table for building Enterprise Applications. Supports React / Angular / Vue / Plain JavaScript.

List of 1000 JavaScript Interview Questions

WPPConnect is an open source project developed by the JavaScript community with the aim of exporting functions from WhatsApp Web to the node, which can be used to support the creation of any interaction, such as customer service, media sending, intelligence recognition based on phrases artificial and many other things, use your imagination

An open-source JavaScript library for world-class 3D globes and maps :earth_americas:

PDF Reader in JavaScript

A JavaScript engine optimized for running React Native.

🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first.

🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

A progressive Node.js framework for building efficient, scalable, and enterprise-grade server-side applications with TypeScript/JavaScript 🚀

A modern load testing tool, using Go and JavaScript

Build system optimized for JavaScript and TypeScript, written in Rust

Slint is an open-source declarative GUI toolkit to build native user interfaces for Rust, C++, JavaScript, or Python apps.

《代码随想录》LeetCode 刷题攻略：200道经典题目刷题顺序，共60w字的详细图解，视频难点剖析，50余张思维导图，支持C++，Java，Python，Go，JavaScript等多语言版本，从此算法学习不再迷茫！🔥🔥 来看看，你会发现相见恨晚！🚀

Property based testing framework for JavaScript (like QuickCheck) written in TypeScript

Find and fix problems in your JavaScript code.

📝 Algorithms and data structures implemented in JavaScript with explanations and links to further readings

TypeScript & JavaScript ORM for Node.js — supports PostgreSQL, MySQL, MariaDB, SQLite, SQL Server, Oracle, and more.

Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.

Google's common Java, C++ and JavaScript library for parsing, formatting, and validating international phone numbers.

Babylon.js is a powerful, beautiful, simple, and open game and rendering engine packed into a friendly JavaScript framework.

Protocol Buffers for JavaScript & TypeScript.

OpenTelemetry instrumentation for JavaScript modules

JavaScript API for Chrome and Firefox

The JavaScript / Wasm runtime that powers Cloudflare Workers

A JavaScript codemod toolkit.

TypeScript/JavaScript 3D maps and geospatial data visualization engine library

T.J. Watson Libraries for Analysis, with front ends for Java, Android, and JavaScript, and many common static program analyses.

Highcharts JS, the JavaScript charting framework

Fast Rust bundler for JavaScript/TypeScript with Rollup-compatible API.

支持 Python3、JavaScript、Shell、Typescript 的定时任务管理平台（Timed task management platform supporting Python3, JavaScript, Shell, Typescript）

📜 33 JavaScript concepts every developer should know.

A JavaScript PDF generation library for Node and the browser

A JavaScript Engine Fuzzer

Boa is an embeddable Javascript engine written in Rust.

The JavaScript and API powered WordPress.com

Pure Javascript OCR for more than 100 Languages 📖🎉🖥

A javascript text differencing implementation.

A powerful JavaScript library for interacting with the Discord API

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

LLRT (Low Latency Runtime) is an experimental, lightweight JavaScript runtime designed to address the growing demand for fast and efficient Serverless applications.

The smallest & fastest library for really easy, totally type-safe unit conversions in TypeScript & JavaScript.

A mixture of tooling combined to produce JavaScript from OCaml & Reason

A fast, local first, reactive Database for JavaScript Applications https://rxdb.info/

Build terminal dashboards using ascii/ansi art and javascript

A powerful cross-platform UI toolkit for building native-quality iOS, Android, and Progressive Web Apps with HTML, CSS, and JavaScript.

Meteor, the JavaScript App Platform

Javascript Canvas Library, SVG-to-Canvas (& canvas-to-SVG) Parser

the package manager for JavaScript

A declarative, efficient, and flexible JavaScript library for building user interfaces.

📦 Workbox: JavaScript libraries for Progressive Web Apps

Delightful JavaScript Testing.

A bundler for javascript and friends. Packs many modules into a few bundled assets. Code Splitting allows for loading parts of the application on demand. Through "loaders", modules can be CommonJs, AMD, ES6 modules, CSS, Images, JSON, Coffeescript, LESS, ... and your custom stuff.

Helping you select a JavaScript framework - Todo apps for React.js, Angular, Vue and many more

An API documentation generator for JavaScript.

High-performance JavaScript/TypeScript compiler toolchain in Zig.

High-performance Bazel rules for running Node.js tools and building JavaScript projects

monorepo for the Agoric Javascript smart contract platform

🌊 A flexible and fun JavaScript file upload library

A tiny (118 bytes), secure, URL-friendly, unique string ID generator for JavaScript

Use Webpack to manage app-like JavaScript modules in Rails

Open-source JavaScript charting library behind Plotly and Dash

Relay is a JavaScript framework for building data-driven React applications.

Data Apps & Dashboards for Python. No JavaScript Required.

Adds static typing to JavaScript to improve developer productivity and code quality.

🐠 Babel is a compiler for writing next generation JavaScript.

Client/server side PDF printing in pure JavaScript

A compiler from Go to JavaScript for running Go code in a browser

An extensive math library for JavaScript and Node.js

Ember.js - A JavaScript framework for creating ambitious web applications

Rhino is an open-source implementation of JavaScript written entirely in Java

A JavaScript implementation of various web standards, for use with Node.js

Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.

A simple, lightweight JavaScript API for handling cookies, client-side.

✨ A beautiful, responsive, highly customizable and accessible (WAI-ARIA) replacement for JavaScript's popup boxes. Zero dependencies. 🇺🇦🇪🇺

jQuery JavaScript Library

Create JavaScript libraries in a simple and intuitive way.

A Go compiler based on LLVM in order to better integrate Go with the C ecosystem including Python and JavaScript

AG Charts is a fully-featured and highly customizable JavaScript charting library. The professional choice for developers building enterprise applications

JavaScript toolchain for working with WebAssembly Components

Modular data visualization framework for React, Angular, Svelte, Vue, and vanilla TypeScript or JavaScript

The developer platform for easily building reliable workflows with zero infrastructure for TypeScript & JavaScript