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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 vscode Public

    Visual Studio Code

    TypeScript 194k 45.8k

  2. TypeScript TypeScript Public

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

    Go 112k 17.1k

  3. PowerToys PowerToys Public

    Microsoft PowerToys is a collection of utilities that supercharge productivity and customization on Windows

    C 139k 8.7k

  4. terminal terminal Public

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

    C++ 105k 9.7k

  5. semantic-kernel semantic-kernel Public

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

    C# 28.7k 4.8k

Repositories

Showing 10 of 8378 repositories
  • BotFramework-WebChat Public

    A highly-customizable web-based client for Azure Bot Services.

    microsoft/BotFramework-WebChat's past year of commit activity
    HTML 1,784 MIT 1,600 466 50 Updated Oct 18, 2026
  • azurelinux Public

    General purpose Linux OS for Azure

    microsoft/azurelinux's past year of commit activity
    Python 5,355 MIT 710 24 226 Updated Oct 18, 2026
  • qdk Public

    Microsoft Quantum Development Kit, including the Q# programming language, resource estimator, and Quantum Katas

    microsoft/qdk's past year of commit activity
    Rust 1,022 MIT 219 222 (1 issue needs help) 44 Updated Oct 18, 2026
  • onnxruntime Public

    ONNX Runtime: cross-platform, high performance ML inferencing and training accelerator

    microsoft/onnxruntime's past year of commit activity
    C++ 22,115 MIT 4,332 930 875 Updated Oct 18, 2026
  • 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.

    microsoft/testfx's past year of commit activity
    C# 1,053 MIT 312 58 12 Updated Oct 18, 2026
  • garnet Public

    Garnet is a remote cache-store from Microsoft Research that offers strong performance (throughput and latency), scalability, storage, recovery, cluster sharding, key migration, and replication features. Garnet can work with existing Redis clients.

    microsoft/garnet's past year of commit activity
    C# 12,053 MIT 715 37 (11 issues need help) 37 Updated Oct 18, 2026
  • vscode Public

    Visual Studio Code

    microsoft/vscode's past year of commit activity
    TypeScript 193,828 MIT 45,812 5,000+ (467 issues need help) 2,923 Updated Oct 18, 2026
  • windows-rs Public

    Rust for Windows

    microsoft/windows-rs's past year of commit activity
    Rust 12,835 Apache-2.0 682 53 2 Updated Oct 18, 2026
  • sql-apps Public

    SQL Apps gives you a working application foundation and guides for creating your own screens, data and workflows with the AI assistant of your choice. You can start with an idea rather than a framework choice.

    microsoft/sql-apps's past year of commit activity
    JavaScript 1 MIT 2 0 1 Updated Oct 18, 2026
  • copilot-camp Public

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

    microsoft/copilot-camp's past year of commit activity
    C# 671 MIT 180 45 (1 issue needs help) 104 Updated Oct 18, 2026
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