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Open source projects and samples from Microsoft
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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 175k 34k

  2. TypeScript TypeScript Public

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

    TypeScript 105k 12.9k

  3. PowerToys PowerToys Public

    Windows system utilities to maximize productivity

    C# 121k 7.2k

  4. terminal terminal Public

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

    C++ 99k 8.7k

  5. semantic-kernel semantic-kernel Public

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

    C# 25.6k 4.1k

Repositories

Showing 10 of 6981 repositories
  • Generative-AI-for-beginners-java Public

    A hands-on course that teaches you Generative AI fundamentals through Java programming.

    microsoft/Generative-AI-for-beginners-java’s past year of commit activity
    Java 17 MIT 9 4 1 Updated Jul 27, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 9,563 MIT 5,254 969 179 Updated Jul 27, 2025
  • BCApps Public

    Repository for collaboration on Microsoft Dynamics 365 Business Central applications.

    microsoft/BCApps’s past year of commit activity
    AL 437 MIT 223 35 35 Updated Jul 27, 2025
  • PowerToys Public

    Windows system utilities to maximize productivity

    microsoft/PowerToys’s past year of commit activity
    C# 121,171 MIT 7,191 5,000+ (220 issues need help) 93 Updated Jul 27, 2025
  • typespec Public
    microsoft/typespec’s past year of commit activity
    Java 5,265 MIT 297 895 (2 issues need help) 52 Updated Jul 27, 2025
  • LightGBM Public

    A fast, distributed, high performance gradient boosting (GBT, GBDT, GBRT, GBM or MART) framework based on decision tree algorithms, used for ranking, classification and many other machine learning tasks.

    microsoft/LightGBM’s past year of commit activity
    C++ 17,430 MIT 3,917 415 (10 issues need help) 48 Updated Jul 27, 2025
  • fluentui-android Public
    microsoft/fluentui-android’s past year of commit activity
    Kotlin 634 MIT 114 0 2 Updated Jul 27, 2025
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 17,318 MIT 3,359 2,028 258 Updated Jul 27, 2025
  • lisa Public

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

    microsoft/lisa’s past year of commit activity
    Python 310 MIT 212 33 (3 issues need help) 33 Updated Jul 27, 2025
  • 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# 11,370 MIT 587 20 (11 issues need help) 23 Updated Jul 27, 2025
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