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Open source projects and samples from Microsoft
README.md

Open Source at Microsoft

Get Involved

Right now, open communities are building amazing software together, and there are excellent "good first issue" opportunities, if you're looking to get involved.

Visit opensource.microsoft.com to learn more!

Microsoft projects adopt the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ.

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  1. vscode Public

    Visual Studio Code

    TypeScript 173k 32.9k

  2. TypeScript Public

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

    TypeScript 105k 12.9k

  3. PowerToys Public

    Windows system utilities to maximize productivity

    C# 120k 7.1k

  4. terminal Public

    The new Windows Terminal and the original Windows console host, all in the same place!

    C++ 98.5k 8.6k

  5. semantic-kernel Public

    Integrate cutting-edge LLM technology quickly and easily into your apps

    C# 24.9k 3.9k

Repositories

Showing 10 of 6884 repositories
  • WindowsAppSDK Public

    The Windows App SDK empowers all Windows desktop apps with modern Windows UI, APIs, and platform features, including back-compat support, shipped via NuGet.

    C++ 4,023 MIT 359 418 22 Updated Jun 4, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    PowerShell 9,411 MIT 5,111 975 160 Updated Jun 4, 2025
  • vscode-cordova Public

    A Visual Studio Code extension providing intellisense, debug, and build support for Cordova and Ionic projects.

    TypeScript 296 71 1 1 Updated Jun 4, 2025
  • lisa Public

    LISA is developed and maintained by Microsoft, to empower Linux validation.

    Python 298 MIT 205 35 (3 issues need help) 34 Updated Jun 4, 2025
  • cheriot-ibex Public

    cheriot-ibex is a RTL implementation of CHERIoT ISA based on LowRISC's Ibex core.

    SystemVerilog 109 Apache-2.0 21 9 2 Updated Jun 4, 2025
  • testfx Public

    This repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.

    C# 879 MIT 275 263 23 Updated Jun 4, 2025
  • demikernel Public

    Kernel-Bypass LibOS Architecture

    Rust 1,147 MIT 134 86 (6 issues need help) 2 Updated Jun 4, 2025
  • RD-Agent Public

    Research and development (R&D) is crucial for the enhancement of industrial productivity, especially in the AI era, where the core aspects of R&D are mainly focused on data and models. We are committed to automating these high-value generic R&D processes through R&D-Agent, which lets AI drive data-driven AI. 🔗https://aka.ms/RD-Agent-Tech-Report

    Python 5,517 MIT 494 29 37 Updated Jun 4, 2025
  • copilot-camp Public

    Hands-on labs for extending Microsoft 365 Copilot and building custom engine agents

    TypeScript 250 MIT 67 33 (1 issue needs help) 2 Updated Jun 4, 2025
  • msquic Public

    Cross-platform, C implementation of the IETF QUIC protocol, exposed to C, C++, C# and Rust.

    C 4,338 MIT 576 159 (13 issues need help) 54 Updated Jun 4, 2025
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