Top 10 Microsoft Open‑Source Projects on GitHub Ranked by Stars

In this article we present Microsoft’s top‑10 open‑source projects on GitHub, ranked by the number of stars each repository has received, with the highest‑starred project listed first.

10: Cascadia – Language: Python (100%). Stars: 19.9k. Description: Cascadia is a fun new coding font bundled with Windows Terminal and now the default font for Visual Studio. https://github.com/microsoft/cascadia-code

9: Calculator – Language: C++ (71.9%). Stars: 24.4k. Description: A modern Windows calculator app written in C++ and C#, offering standard, scientific, programmer modes and various unit and currency converters. https://github.com/microsoft/calculator

8: Monaco Editor – Language: JavaScript (81.1%). Stars: 29.3k. Description: The Monaco Editor is generated from VS Code’s source; the repository contains the packaging scripts and provides the monaco-editor npm module. https://github.com/microsoft/monaco-editor

7: ML‑For‑Beginners – Platform: Jupyter Notebook (99.4%). Stars: 35.5k. Description: A 12‑week, 26‑lesson machine‑learning curriculum from Microsoft, featuring quizzes, solutions, and project‑based learning. https://github.com/microsoft/ML-For-Beginners

6: Playwright – Language: TypeScript (85.1%). Stars: 37.4k. Description: A web‑testing and automation framework that enables a single API to test Chromium, Firefox, and WebKit across browsers. https://github.com/microsoft/playwright

5: Web‑Dev‑For‑Beginners – Language: JavaScript (78.5%). Stars: 48.2k. Description: A 12‑week, 24‑lesson course covering JavaScript, CSS, and HTML fundamentals, with quizzes, solutions, and project‑based exercises. https://github.com/microsoft/Web-Dev-For-Beginners

4: PowerToys – Language: C# (53.6%). Stars: 72.8k. Description: A set of Windows utilities for power users to customize and streamline their Windows experience, boosting productivity. https://github.com/microsoft/PowerToys

3: TypeScript – Language: TypeScript (100%). Stars: 80.4k. Description: TypeScript adds optional static typing to JavaScript, enabling large‑scale application development across browsers, hosts, and operating systems; it compiles to readable, standards‑compliant JavaScript. https://github.com/microsoft/TypeScript

2: Terminal – Language: C++ (94.6%). Stars: 82.9k. Description: The repository contains source code for Windows Terminal, Windows Terminal Preview, the Windows console host, shared components, ColorTool, and sample projects demonstrating the Windows Console API. https://github.com/microsoft/terminal

1: Visual Studio Code – Language: TypeScript (93.8%). Stars: 131k. Description: VS Code combines a lightweight code editor with powerful development features such as debugging, extensibility, and cross‑platform support for Windows, macOS, and Linux; it receives monthly updates and an Insiders build for early access. https://github.com/microsoft/vscode

These ten projects represent the most starred Microsoft‑maintained open‑source repositories on GitHub.